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

Input: Consider Input: White sturgeon inhabit _ large river systems, all on the western coast of North America.

Output: three


Input: Consider Input: Frozen grafts can have a shelf life of up to _ years.

Output: five


Input: Consider Input: Cats have _ toes on each front paw, but only four toes on each back paw.


Output: five