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.

Example Input: Sexual maturity is reached at ____ years, and females calve every other year.
Example Output: four

Example Input: Jersey has nine breeding seabird species, of which ____ nest on the north coast.
Example Output: seven

Example Input: All lithosphere is composed of ____ layers of differing composition.
Example Output:
two