sentence 1: How do I build my profile for top B-schools?
 sentence 2: How do I build my profile for Harvard, Wharton, INSEAD etc.? sentence 1: Why do propellers in airplanes rotate in opposite directions?
 sentence 2: Why does the propellers rotate in opposite direction in planes? sentence 1: How can I know who were my ancestors?
 sentence 2: How can I easily find my ancestors' roots in India online? sentence 1: Why isn't there a Nobel Prize for mathematics?
 sentence 2: Who was a double winner of the Nobel Prize? sentence 1: What are the things I should know or prepare before I start my first Vipassana retreat?
 sentence 2: What should I do before attending a Vipassana retreat?
same meaning
same meaning
not same meaning
not same meaning
same meaning