instruction:
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.
question:
Some people routinely sleep only ____ hours a night but feel fine during the day.
answer:
four


question:
Beryllium is found in a variety of countries on ____ continents.
answer:
five


question:
Most health professionals recommend approximately ____ hours of sleep each night.
answer:

eight