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

Input: Consider Input: Sturgeons are shark-like in form but are unique in having _ rows of bony plates along the body.

Output: five

Input: Consider Input: Silkies have _ seasonal moults but little hair is dropped.

Output: two

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