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

Example Input: Roundworms are fairly large worms that can grow to be _ or five inches long.
Example Output: four

Example Input: Catholic systems comprise _ of the twenty largest healthcare systems in the country.
Example Output: ten

Example Input: Some care providers begin contraceptives as early as _ days postpartum, or as late as four weeks.
Example Output:
five