sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: How can you say if a person is genius?
 sentence 2: What is it like to know a genius? sentence 1: Is it safe to give a dog Benadryl to help it sleep?
 sentence 2: Is it safe to give dogs Benadryl? How does the dosage work? sentence 1: What should be the main idea of a book?
 sentence 2: What is the main idea of this book?
not same meaning
not same meaning
same meaning
not same meaning