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

Example Input: Cancer can start in any of the _ sections or where the colon ends in the rectum.
Example Output: four

Example Input: Many Asian countries deny entry to travelers whose passports are valid for less than _ months.
Example Output: six

Example Input: Young otters begin playing at four weeks of age and learn to swim at about _ weeks of age.
Example Output:
seven