sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: Why are people from Nordic countries so physically strong?
 sentence 2: Why is Sweden the only secular Nordic country? sentence 1: What is the best way to keep bananas fresh?
 sentence 2: How do I keep bananas fresh for longer?
not same meaning
not same meaning
same meaning