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: Owls have ____ toes on each foot, like most birds.

Answer: four


Question: Some women experience a labor of three to ____ days.

Answer: five


Question: Girls can start their periods as young as ____ years old.

Answer:
eight