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:
Carbon is able to bond with up to ____ other elements.
answer:
four


question:
Most newborns nurse every one to ____ hours, even at night.
answer:
three


question:
Zirconia can exhibit ____ different crystal structures depending on temperature.
answer:

three