Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.
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Question: Elves are the first of the ____ families of fairy People.

Answer: eight


Question: Women are ____ times more likely to have bone thinning than men.

Answer: four


Question: Relative fitness is ____ for a sterile organism, even if it is robust and long-lived.

Answer:
zero