sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: What's the difference between Zapier and ifttt?
 sentence 2: What is the difference between Zapier and IFTTT? sentence 1: Does loneliness make a person an introvert?
 sentence 2: What makes you an introvert?
not same meaning
same meaning
not same meaning