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: Gibberellins are diterpenoids derived from four isoprenoid units forming a system of ____ rings.

SOLUTION: four

PROBLEM: Chromatography is unique because of ____ reasons.

SOLUTION: three

PROBLEM: Mammals have a dentition divided into ____ distinct types of teeth.

SOLUTION:
three