sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: How has Quora improved your life?
 sentence 2: How has Quora helped you in your life? sentence 1: How does a robot work?
 sentence 2: How do robots work? sentence 1: What if Apple buys Samsung?
 sentence 2: What if Samsung buys Apple? sentence 1: If the total energy in the universe is zero, does that mean that there is a way to "make" matter/energy by also making some kind of counterpart?
 sentence 2: Is the total energy of the universe zero? sentence 1: If out of nowhere, magically, everyone forgave the US of its debt, what would happen?
 sentence 2: Is the US student debt a conspiracy? sentence 1: How much would it cost to invent immortality?
 sentence 2: How much does MemSQL cost?
not same meaning
same meaning
same meaning
not same meaning
same meaning
not same meaning
not same meaning