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:
Orangutans spend up to ____ hours a day eating or foraging for food.
answer:
six


question:
Front feet have ____ toes, including a small toe corresponding to our thumb.
answer:

five