In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Example Input: Most divorces take place after three to _ years of marriage.
Example Output: five

Example Input: Pollination is accomplished only by insect-agency, and where insects fail _ fruits are ripened.
Example Output: no

Example Input: Most women taking birth control pills have _ problems at all.
Example Output:
no