sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: Why did Hillary Clinton loose the 2016 Presidential election?
 sentence 2: What made Hillary to lose presidential election? sentence 1: What should I do when I don't feel like doing anything?
 sentence 2: What do I do when I don't feel like doing anything? sentence 1: Why do British still bother about their queen? There's no contribution from them. Just burn away the country's resource.
 sentence 2: Why is there still so much craziness about UFO's when MUFON has proved their existence?
not same meaning
same meaning
not same meaning
not same meaning