sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: How do I hack any security wifi password?
 sentence 2: How can we hack Wifi Passowrds? sentence 1: How do you raise a child?
 sentence 2: What are some of the best ways to raise your child? sentence 1: Capacitors block DC voltage. Why they are used in DC circuits?
 sentence 2: Why are DC motors used in robots?
not same meaning
same meaning
same meaning
not same meaning