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

Ex Input:
Aquatic adults have prominent red reathery gills, are large, and have _ toes on each foot.

Ex Output:
four


Ex Input:
Most people stay in a nursing home for less than _ years.

Ex Output:
four


Ex Input:
Modulation is the first of _ efficiency related features unique to the linear compressor.

Ex Output:

three