sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: Is it necessary to have sex in relationship?
 sentence 2: Is sex necessary in a relationship? sentence 1: How do you get rid of acne scars on your chest?
 sentence 2: How do I get rid of pimples permanently? sentence 1: Do you believe in witchcraft?
 sentence 2: Do you believe in the powers of witchcraft? sentence 1: What is the best method to find roots of any typical cubic equation?
 sentence 2: How do I find roots for a cubic equation?
not same meaning
same meaning
same meaning
same meaning
same meaning