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: Primates have ____ digits on their forelimbs.
Example Output: five

Example Input: Blood donors can give blood every ____ weeks, or six times a year.
Example Output: eight

Example Input: Gravity is the force that brings ____ objects together .
Example Output:
two