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 are the risks of the JG BAR-10 Airsoft?
 sentence 2: What are the risks of using parts made for airsoft on real firearms? sentence 1: What is the source of oxygen given off by plants?
 sentence 2: How does oxygen help plants grow?
same meaning
not same meaning
not same meaning