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


question:
Rattlesnakes breed only every ____ to three years.
answer:
two


question:
Marriage is the legal union of ____ people.
answer:

two