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

Ex Input:
R is an average of the color rendering ability of _ or more specific colors.

Ex Output:
eight


Ex Input:
Gerbils get reproductive when they reach sexual maturity at the age of _ months.

Ex Output:
three


Ex Input:
Radiant energy has _ defining properties.

Ex Output:

two