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:
Some bird feeders have ____ perches at all, but neither do tree trunks.
answer:
no


question:
Earth is the third planet from the Sun in our solar system, which includes ____ other planets.
answer:
seven


question:
Prostate cancer is categorized in ____ stages.
answer:

four