sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: What is the best method to compare and contrast photosynthesis and cellular respiration?
 sentence 2: How does respiration compare or contrast with photosynthesis? sentence 1: How does it feel to be successful but lonely?
 sentence 2: How does it feel to be successful?
not same meaning
same meaning
not same meaning