sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: How do I find the precision for a measurement?
 sentence 2: How do I find precise measurements of Pi? sentence 1: Why is the night an important Apache tribe symbol? What does it mean?
 sentence 2: Why is the earth an important Apache tribe symbol? What does it mean?
not same meaning
not same meaning
not same meaning