http://www.youtube.com/watch?v=C3rx3NElWE0
http://www.youtube.com/watch?v=nMYcIhqSgIg
http://www.youtube.com/watch?v=rzwFKcLXV1Y
http://www.youtube.com/watch?v=46cs3GeYD2U
http://www.youtube.com/watch?v=XxcvTyXAZsk
Must watch videos in order to answer question

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