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: Infertility affects one in ____ couples today.
Example Output: five

Example Input: Anapsids have ____ openings in the temporal region of their skull.
Example Output: no

Example Input: Bovine insulin differs from human in only ____ amino acid residues, and porcine insulin in one.
Example Output:
three