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

Ex Input:
Epilepsy is defined as having _ or more unprovoked seizures.

Ex Output:
two

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

Ex Output:
four

Ex Input:
Gravity is the force that brings _ objects together .

Ex Output:
two