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 real secret behind area 51?
 sentence 2: What is the secret about Area 51? sentence 1: Is ZzzQuil generic?
 sentence 2: What are some trustworthy medicine brands in the US? sentence 1: How much does it typically cost to replace wheel bearings?
 sentence 2: How much does a Maaco paint job cost?
not same meaning
same meaning
not same meaning
not same meaning