sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: What was the production of artwork intended for in Hawaii and how is it compared to the one intended for in Pennsylvania?
 sentence 2: What was the production of artwork intended for in Hawaii and how is it compared to the one intended for in Maine? sentence 1: What is the best book on operating systems?
 sentence 2: What are some good problem books for operating systems?
not same meaning
not same meaning
same meaning