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

Ex Input:
Frozen grafts can have a shelf life of up to _ years.

Ex Output:
five


Ex Input:
Children are almost _ times as likely to smoke if their parents do.

Ex Output:
three


Ex Input:
Ultraviolet radiation falls under _ categories separated by wavelength.

Ex Output:

three