sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: Is factor investing a good investment strategy?
 sentence 2: Is investing in stocks good for making money? sentence 1: What is the chemical composition of hair bleach (the powder and the liquid), and why?
 sentence 2: Is it safe to bleach your hair with Clorox? sentence 1: What us the best things to do in college life that we wouldn't want to miss?
 sentence 2: What is the best things to do in college life that we wouldn't want to miss?
not same meaning
not same meaning
not same meaning
same meaning