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:
Seasonal records indicate that, in most years, ____ generations occur.
answer:
two


question:
Neutrons consist of one up quark and ____ down quarks.
answer:
two


question:
Illness appears an average of ____ weeks after a person eats contaminated food.
answer:

three