sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: Is at least the potential energy of vacuum energy and dark energy infinite?
 sentence 2: Is vacuum energy the same as dark energy? is it infinite? if it is, how and why? sentence 1: How do I learn Spring Framework?
 sentence 2: Is Spring Framework has a great future? And is it worth to learn?
not same meaning
same meaning
not same meaning