sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: Why computer vision is hard?
 sentence 2: Why computer vision is computationally hard? sentence 1: How to have the  perfectionist attitude  of the Japanese?
 sentence 2: If attitude is important to find a girlfriend, then how come Adolf Hitler had so many ? sentence 1: What were the two famous open problems that George Dantzig mistook for homework and solved while being a graduate student at Berkeley?
 sentence 2: I am a UC Berkeley student and a Dropbox user, but didn't sign up for the Dropbox Space Race. Is it too late for me to get the free 25GB for two years? sentence 1: Why is my question marked as “needing improvement"?
 sentence 2: Why is every question I post on Quora marked as needing clarification?
not same meaning
not same meaning
not same meaning
not same meaning
same meaning