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:
Tin has ____ allotropic forms.
answer:
two


question:
Cattle can have up to six to ____ years of grazing, after which a scrub savannah grows up.
answer:
ten


question:
Sea urchins have ____ paired rows of tiny tube feet which are found amongst the spines.
answer:

five