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 way to listen to digital music stored on computer through headphones?
 sentence 2: How do you consume digital music? sentence 1: How does blood come into the mouth as a result of high blood pressure?
 sentence 2: Does creatine gives you high blood pressure? sentence 1: Which serial killers were addicted to drugs and what crimes have they done while they were?
 sentence 2: Which serial killers were addicted to drugs and which crimes have they done while they were?
not same meaning
not same meaning
not same meaning
same meaning