TASK DEFINITION: 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.
PROBLEM: Elephants have five toes on the fore feet and ____ on the hind feet.

SOLUTION: four

PROBLEM: Cardinals have ____ main functions in the church.

SOLUTION: three

PROBLEM: Color film is sensitized in ____ layers to red, green, and blue light.

SOLUTION:
three