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.

Ex Input:
Atoms are extremely small, on the order of a few ____ billionths of a meter.

Ex Output:
ten

Ex Input:
Sponges are subdivided into ____ classes.

Ex Output:
three

Ex Input:
Natural gas is lighter than air, non-toxic and contains ____ poisonous ingredients.

Ex Output:
no