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:
Philosophy has ____ axioms since it is simply what reason knows by means of concepts.

Ex Output:
no

Ex Input:
Exposure can occur in ____ general ways, ingestion, skin contact and inhalation.

Ex Output:
three

Ex Input:
Tadpoles emerge about ____ days after fertilization.

Ex Output:
four