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 children start asking questions when they're ____ or five years old.
answer:
four

question:
Snowmobiles can accommodate ____ riders per vehicle.
answer:
two

question:
Whales are abundant, and some ____ species of seals are found in the area.
answer:
six