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: If Elon Musk wants to colonize Mars as a backup to save humanity, why not colonize the moon?
 sentence 2: Are we ever going to colonize Mars? sentence 1: What is the difference between soil and sand?
 sentence 2: What is the different between soil and sand?
same meaning
not same meaning
same meaning