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

Input: Consider Input: Most volcanoes erupt for _ to four weeks and then rest.

Output: three

Input: Consider Input: Ozone is a form of oxygen in which the molecule contains _ atoms instead of two.

Output: three

Input: Consider Input: Spotted coralroot is the most common of _ coralroot species that grow in Connecticut.
Output: three