Input: On a scale from 0-5, where 0 is "not similar" and 5 is "very similar", how similar is the sentence "Pope Benedict XVI Says Goodbye to Cardinals" to the sentence "Pope Benedict XVI departs Vatican for last time"?

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Output: 4

Input: On a scale from 0-5, where 0 is "not similar" and 5 is "very similar", how similar is the sentence "Man Who Set Himself on Fire on National Mall Has Died" to the sentence "Man Sets Himself on Fire on National Mall, Flown to Hospital"?

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Output: 3

Input: On a scale from 0-5, where 0 is "not similar" and 5 is "very similar", how similar is the sentence "A man is tying his shoe." to the sentence "A man ties his shoe."?

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Output: 5

Input: On a scale from 0-5, where 0 is "not similar" and 5 is "very similar", how similar is the sentence "A man is walking along a path through wilderness." to the sentence "A man is walking down a road."?

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Output:
2