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:
Mollusks have one or ____ hearts.
answer:
two


question:
Black widows mature in two to ____ months.
answer:
four


question:
T is the point of contact of the ____ circles.
answer:

two