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

Ex Input:
Cichlids are popular in the aquarium hobby for a _ reason.

Ex Output:
four


Ex Input:
Ferrets bite in _ manners.

Ex Output:
two


Ex Input:
All spiders have _ pairs of legs and a set of leg-like appendages called palps.

Ex Output:

four