sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: How I could improve my thinking skills?
 sentence 2: How can I improve my mathematical thinking skills? sentence 1: How do I view my block friends profile in facebook?
 sentence 2: My friend has blocked me on Facebook and I want to view all the chat messages between us. How do I get all my old chat messages back on Facebook? sentence 1: According to the first law of motion, external force stops a body in uniform motion. What force do I have if I stop a rolling pin.?
 sentence 2: According to the first law of motion, external force stops a body in uniform motion. What force do I have if I stop a rolling pin?
not same meaning
not same meaning
not same meaning
same meaning