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: What's long term memory loss? What are its causes?
 sentence 2: What are the causes of long term memory loss? sentence 1: Why does this happen on my computer?
 sentence 2: Tourist visa application USA online?
same meaning
same meaning
not same meaning