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: Herbs require at least ____ hours of sunlight.
Example Output: six

Example Input: Some animals have only ____ or three chambers .
Example Output: two

Example Input: Embryos develop and hatch in about four weeks, then spend ____ to five months in the tadpole stage.
Example Output:
four