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

Ex Input:
Carbon dioxide accounts for _ fourths of the predicted increase in the greenhouse effect.

Ex Output:
three


Ex Input:
Cancer can start in any of the _ sections or where the colon ends in the rectum.

Ex Output:
four


Ex Input:
Deciduous forests have _ distinct seasons.

Ex Output:

four