sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: Is MongoDB free to use for my commercial application?
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 sentence 2: What are the top desktop backgrounds? sentence 1: Why does Quora say that my question needs improvement when I wasn't even the one who asked it?
 sentence 2: Why does Quora attribute every question that needs editing to me, just because I answered it? sentence 1: How do scientist measure a atomic radius?
 sentence 2: How is atomic radius measured? sentence 1: What are the most efficient methods for me to improve my English?
 sentence 2: What are some ways to improve English? sentence 1: How can I customize my walking speed on Google Maps?
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 sentence 2: What's the best time to announce your fundraising?
not same meaning
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not same meaning
same meaning
same meaning
not same meaning
same meaning
not same meaning
not same meaning
not same meaning