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

Ex Input:
Stroke is our nation's number _ killer, and a leading cause of disability for older adults.

Ex Output:
three


Ex Input:
Forests have _ major functions.

Ex Output:
four


Ex Input:
Breast cancer is a specific cancer that occurs in one in _ women.

Ex Output:

eight