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:
Ocean has ____ life-important properties.
answer:
two


question:
Infertility affects one in ____ couples today.
answer:
five


question:
Most species have ____ toes, three of which are forward-pointing.
answer:

four