instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Gerbils get reproductive when they reach sexual maturity at the age of _ months.
answer:
three


question:
Y are _ morphisms and g is quasi-compact and surjective.
answer:
two


question:
Reservoirs cover an area of the planet _ times the size of Britain.
answer:

six