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

Ex Input:
Gymnosperms comprise _ divisions.

Ex Output:
four


Ex Input:
Premolars have one, two, and sometimes _ canals.

Ex Output:
three


Ex Input:
Insomnia is defined as trouble falling asleep or staying asleep and affects one in _ adults.

Ex Output:

three