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

Ex Input:
Skin cancer affects one in _ people in the United States over a lifetime.

Ex Output:
six

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

Ex Output:
four

Ex Input:
High fevers are the most common cause of seizures in children ages six months to _ years.

Ex Output:
four