sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: How did you become famous?
 sentence 2: How can I become famous if I don't have any talent? sentence 1: What is the dating scene like for men?
 sentence 2: What is the dating scene like in the US?
not same meaning
not same meaning
not same meaning