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

Ex Input:
Jurassic rocks have _ outcrops in the area but they are identified by bore holes.

Ex Output:
no


Ex Input:
Rainforests cover less than _ percent of the Earth's surface.

Ex Output:
two


Ex Input:
Most aphthous ulcers heal in one to _ weeks.

Ex Output:

two