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: Some women experience a labor of three to ____ days.
Example Output: five

Example Input: Nymphs go through ____ instars and a pupa stage before reaching adulthood.
Example Output: three

Example Input: Man consists of ____ opposing elements, body and soul.
Example Output:
two