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:
Cichlids are popular in the aquarium hobby for a ____ reason.
answer:
four


question:
Sponges have ____ main tissue layers.
answer:
three


question:
Many mammals have hooves that are cloven with ____ parts.
answer:

two