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: Hydroplanes have ____ or more wetted surface areas.
Example Output: two

Example Input: HOD usually shows up as an acute lameness, often seeming to affect all ____ legs simultaneously.
Example Output: four

Example Input: Edges Usually refers to the ____ outside edges of the pages of a book.
Example Output:
three