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

Example Input: Epilepsy is defined as having _ or more unprovoked seizures.
Example Output: two

Example Input: World population continues to rise, even as a few countries move toward _ growth.
Example Output: zero

Example Input: Most children overcome bed wetting between the ages of _ and ten.
Example Output:
six