sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: Can hydrogen peroxide really whiten teeth?
 sentence 2: How can I whiten my teeth with hydrogen peroxide? sentence 1: Is it worth coming out as bisexual?
 sentence 2: Should I come out if I'm bisexual? sentence 1: There have been various articles about programs running to spot and patch vulnerabilities in software. Does the halting theorem disprove this?
 sentence 2: How do I get myself and information off your site?
not same meaning
same meaning
same meaning
not same meaning