sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: Why did Luna showed no expression when she heard Hermione torturing scream?
 sentence 2: Why is it that when you express alternative ideas that might lead to a better existence for all, many immediately scream "utopia" without even considering the merits? sentence 1: What is bamboo flowering?
 sentence 2: Is bamboo wood? sentence 1: What is the most difficult language to learn among the European languages?
 sentence 2: What are the most difficult languages to learn?
not same meaning
not same meaning
not same meaning
not same meaning