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 salary of IIT teachers?
 sentence 2: What is the salary of a professor in IIT? sentence 1: What are the signs which you can observe, to tell if a girl is single or not?
 sentence 2: Where could I meet or find girls to date in bangalore? sentence 1: Which programming language is the perfect language, which of them has the least issues and hatred?
 sentence 2: Is there a perfect programming language?
not same meaning
same meaning
not same meaning
not same meaning