sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: Why does nobody like Nickelback?
 sentence 2: Why don't people like Nickelback? sentence 1: When a potential employer calls your references does that mean you are likely to get hired?
 sentence 2: As a student, if I get an Intent to Hire form, does that mean I'm hired? sentence 1: Why do languages develop curse words?
 sentence 2: Why do curse words exist?
not same meaning
same meaning
not same meaning
not same meaning