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: Presidential elections take place every ____ years.

Answer: four


Question: Female smokers enter menopause an average of ____ years earlier than nonsmokers.

Answer: five


Question: Men also develop osteoporosis and fractures but at a rate ____ to four times less than women.

Answer:
three