sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: What is the most disgusting thing anyone has ever done to you?
 sentence 2: What is the most disgusting thing you've ever done? sentence 1: How should I run the same video channel on Youtube, Dailymotion and Vimeo simultaneously?
 sentence 2: Can I upload the same video to YouTube and Dailymotion?
not same meaning
not same meaning
not same meaning