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

Input: Consider Input: Saturated bonds are when each of the carbons has _ single bonds as in the top figure.

Output: four


Input: Consider Input: Crustaceans have _ major body parts .

Output: three


Input: Consider Input: States are organized like the federal government, with _ branches of government.


Output: three