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: Significant power is observed in the magnetic field oscillations with periods of ____ minutes.

SOLUTION: five

PROBLEM: Kittens take solid food within ____ months.

SOLUTION: two

PROBLEM: Cycling is ranked among the top ____ exercises for improving cardiovascular fitness.

SOLUTION:
three