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 get motivated towards my studies?
 sentence 2: How do I get myself to become motivated and just study all the time? sentence 1: Who did Krishna kill?
 sentence 2: Can Krishna kill Krishna? sentence 1: What is the colour of sun?
 sentence 2: What is the colour of the Sun?
not same meaning
not same meaning
not same meaning
same meaning