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:
Bond angles The bond angle defined by ____ atoms is calculated.
answer:
three


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


question:
Catalytic lacquers come in ____ varieties, pre and post.
answer:

two