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: All orthodontists are dentists, but only about ____ percent of dentists are orthodontists.
Example Output: six

Example Input: Most bioluminescence is blue for ____ reasons.
Example Output: two

Example Input: Cougars have five toes on the forepaws and ____ on the hind paws.
Example Output:
four