sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: What are the best reference books for class 9 CBSE (All subjects)?
 sentence 2: What are the best reference books for class 9 CBSE? sentence 1: Which is the best answer you read on Quora?
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not same meaning
same meaning
same meaning
not same meaning
not same meaning
not same meaning