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

Example Input: Some people routinely sleep only _ hours a night but feel fine during the day.
Example Output: four

Example Input: Essential oils have a non-toxic, residual effect of up to five months from just _ application.
Example Output: one

Example Input: Women are about _ times more at risk than men.
Example Output:
three