{"download":{"MP3":"http:\/\/downloads.cs50.net\/2012\/fall\/lectures\/3\/week3w.mp3","MP4 (240p)":"http:\/\/downloads.cs50.net\/2012\/fall\/lectures\/3\/week3w-240p.mp4","MP4 (360p)":"http:\/\/downloads.cs50.net\/2012\/fall\/lectures\/3\/week3w-360p.mp4","MP4 (720p)":"http:\/\/downloads.cs50.net\/2012\/fall\/lectures\/3\/week3w-720p.mp4","MP4 (1080p)":"http:\/\/downloads.cs50.net\/2012\/fall\/lectures\/3\/week3w-1080p.mp4"},"srt":{"afr":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/afr\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=VhHn1iTJJzC45ICI4g2902hIIfs%3D","alb":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/alb\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=xCbpIzwR1aQ2YOBbmyThst%2FfAY8%3D","ara":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/ara\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=%2Bxjy9Is%2BVTHuSZNMe8Hml4gqw9A%3D","aze":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/aze\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=0hYryMGaKQd5PWq%2FPFreG4%2FpR6o%3D","baq":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/baq\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=ghEVFFqZv7S%2FahoV4jkBkQ82me0%3D","bel":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/bel\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=LRFLXlBLjMfHX%2FEk0S%2BWsdmuqA4%3D","ben":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/ben\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=UyUN0ByrCh%2BDREHfhdX1BpSzI4I%3D","bul":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/bul\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=7ZGF2KMvUzJ06y4K5PNxDIMHzBY%3D","cat":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/cat\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=CqcXz0umNscj4xqVuYxDbPALK2Q%3D","chi_hans":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/chi_hans\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=42yPOh3IX5TLrreF%2Bi2MpeXDpVM%3D","chi_hant":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/chi_hant\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=F9bW3XtiZ1TH2eY8QQO92pMASsQ%3D","cze":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/cze\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=9g1WFQDyrQu8yU%2F8LB6bM577%2FF4%3D","dan":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/dan\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=BE4GC9qlFLXoV38uxYIthEKVil4%3D","dut":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/dut\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=2fKlvrD5j9jM3LSTnobUkl4KEOE%3D","eng":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/eng\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=6ZZjikZNwfY9Sz8Tqj2ZgumTT%2Fk%3D","epo":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/epo\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=m56%2FMT5ZRtQDo1T2BRYB7DNZBkg%3D","est":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/est\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=GspZStdIblQLnYJTiA%2BsvlVK3zE%3D","fil":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/fil\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=16tzBm%2F4Yz6D9mdTz808YKKL4ho%3D","fin":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/fin\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=x9gTCTIZ7WqRSI6iulTLlbXDgPk%3D","fre_fr":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/fre_fr\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=xaL5S0i0PNLonRoUH97%2FGDc%2BiYw%3D","geo":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/geo\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=QZUgge8cpaY1O26mN%2FuOg4LxfXw%3D","ger":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/ger\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=mjvGn780q1BiarYmaHdARQyg50w%3D","gle":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/gle\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=M%2BxE9iFGYDt7tFzTVT9UFVXTUHw%3D","glg":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/glg\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=QywV8t3HmYoMWjOPxftZNG9yPTI%3D","gre":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/gre\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=6PzHEjpndJfnsLu9ZPotQRHuxEo%3D","guj":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/guj\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=dSE4afPH1yUyEAcdH0cJpY7NWC8%3D","hat":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/hat\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=9VdDWze6BidEvbrGLy0G3l8cPis%3D","heb":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/heb\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=a1cnGs%2FTSPhVWoSALsfXpc0cKns%3D","hin":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/hin\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=U1y5Bq6tMGca50u8XefOBC%2BciKY%3D","hun":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/hun\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=nSM7r8axvS0MwsLiuZtIMQjNHSw%3D","ice":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/ice\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=y6ijgGCX2fAfIofWWCR6Qlj6EbE%3D","ind":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/ind\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=whONsU17dlukaBqJTpzUd9j8iOE%3D","ita":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/ita\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=jQeJLlrxpsX5xMT2Gxdafb0ymJE%3D","jpn":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/jpn\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=irtPTqB5p1My9wk4dxfr4cJ2Kcc%3D","kan":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/kan\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=NaoZUcbYVrGVqwImQuZiSXi8rG4%3D","kor":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/kor\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=eFdW6V%2F40U2XZm%2F9EILwNYTsIm8%3D","lat":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/lat\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=18JvQd1GOBuv1RxdEWj0n8Qp8c0%3D","lav":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/lav\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=%2F5RQgZkPVL95bkqjjJMjCWi2SMw%3D","lit":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/lit\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=5UtMtncC70WtHzMt4UcxGphKQT0%3D","mac":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/mac\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=WnH9P%2Fq%2FMV90HKbQ2vfoj2%2FLcws%3D","may":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/may\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=PAnPK%2FvVaQ8aYf1H2pfEUxW0HvU%3D","mlt":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/mlt\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=zW9todikB1s5OStsMOPMKNVY0bc%3D","nor":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/nor\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=2qZ0D2IT3%2FxdsBliPplCDoq%2BFnc%3D","per":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/per\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=tLFAqTV3ijmO67jskjAT%2ByOOqEc%3D","pol":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/pol\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=pdndwaOToA6xOG%2F66%2BuHhz0b6hA%3D","por_pt":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/por_pt\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=5XNr%2FiKTkXnp62nljT6rOhSZ%2B3k%3D","rum":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/rum\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=VS7DSRticlvTL%2F7djZ2aXKwCdds%3D","rus":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/rus\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=JrooxXkeNSro3Fl7dPNJTar%2B4ik%3D","scc":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/scc\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=jQt7LjkiSmtqxFRnE2y8GG%2FG3d0%3D","scr":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/scr\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=eDxPDZsgrIjFA7PifCBIpgiDTJI%3D","slo":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/slo\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=0oXvtzm8iBrqabDYBu81khltnF0%3D","slv":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/slv\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=IkCUgxV%2FhsAtY5v6dmD00IAe4r0%3D","spa":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/spa\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=r5o5eJIXFOckHkdetQefOMK%2BIFg%3D","swa":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/swa\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=s4%2BdqmReY3JiKmDdX6zP2Pq23dg%3D","swe":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/swe\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=7B4B59Y0cWBxd9VA78dkE0fIB8A%3D","tam":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/tam\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=BuG8fjP%2BA3vyN6LDfkdK6s%2BC2wM%3D","tel":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/tel\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=cPbnSySqDM%2BfKAunn48ng7qwmMo%3D","ukr":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/ukr\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=Dqs1UIhMqZJ8pYMImydM1bPkhik%3D","urd":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/urd\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=ibPBOoODEXqbsFHmzw331BBgMSY%3D","vie":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/vie\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=wtD8W%2BMvNuZwnAf34BIYmuXaO8M%3D","wel":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/wel\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=EptV%2BI2BxRkjYbhWDQzvbfx6obA%3D","yid":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/lectures\/3\/lang\/yid\/week3w.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1388679643&Signature=m3bUlt02PGKtzhWltsVwkJfOhQw%3D"},"thumbnail":"http:\/\/cdn.cs50.net\/2012\/fall\/lectures\/3\/week3w.png","streamUrl":"rtmp:\/\/stream.cs50.net\/cfx\/st\/","survey50":"70","survey50Url":"https:\/\/apps.cs50.edx.org","title":"Week 3, Continued","author":"David J. Malan","video":{"240p":{"height":240,"width":426.66665649414,"framerate":29.97,"bitrate":190079,"duration":3888,"path":"2012\/fall\/lectures\/3\/week3w-240p.mp4"},"360p":{"height":360,"width":640,"framerate":29.97,"bitrate":636335,"duration":3888,"path":"2012\/fall\/lectures\/3\/week3w-360p.mp4"},"720p":{"height":720,"width":1280,"framerate":29.97,"bitrate":1624285,"duration":3888,"path":"2012\/fall\/lectures\/3\/week3w-720p.mp4"},"1080p":{"height":1080,"width":1920,"framerate":29.97,"bitrate":2623830,"duration":3888,"path":"2012\/fall\/lectures\/3\/week3w-1080p.mp4"}},"torrents":{"MP3":"http:\/\/torrents.cs50.net\/2012\/fall\/lectures\/3\/week3w.mp3","MP4 (240p)":"http:\/\/torrents.cs50.net\/2012\/fall\/lectures\/3\/week3w-240p.mp4","MP4 (360p)":"http:\/\/torrents.cs50.net\/2012\/fall\/lectures\/3\/week3w-360p.mp4","MP4 (720p)":"http:\/\/torrents.cs50.net\/2012\/fall\/lectures\/3\/week3w-720p.mp4","MP4 (1080p)":"http:\/\/torrents.cs50.net\/2012\/fall\/lectures\/3\/week3w-1080p.mp4"},"videoUrl":"http:\/\/cdn.cs50.net\/"}