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

Input: Consider Input: Adult muskrats average one foot in length and _ pounds in weight.

Output: three


Input: Consider Input: Morocco has _ perennial rivers and many dams have been built with potential for power generation.

Output: four


Input: Consider Input: Fawns mature at _ years of age.


Output: two