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

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

Example Input: Some seeds can remain dormant for up to _ years.
Example Output: two

Example Input: Pathologists study _ to five years after medical school and their postgraduate training.
Example Output:
four