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: Endospores exhibit ____ signs of life, being described as cryptobiotic.

Answer: no


Question: Couples spend ____ billion dollars a year on infertility treatments.

Answer: two


Question: Every eagle is made from twelve different species of feathers, from ____ different countries.

Answer:
eight