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: Maps are ____ dimensional representations of the earth's surface.
Example Output: two

Example Input: Yellow fever begins suddenly after an incubation period of three to ____ days.
Example Output: five

Example Input: Alcohol alone is involved in ____ times more violent crimes than all illegal substances combined.
Example Output:
seven