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

Input: Consider Input: Terrorism is a problem which has troubled the international community for more than _ decades.

Output: three


Input: Consider Input: Thermal equilibrium occurs when _ bodies have the same temperature.

Output: two


Input: Consider Input: Synchronized skaters perform a series of choreographed maneuvers, lasting three to _ minutes.


Output: four