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

Example Input: Young pandas mature very slowly and are almost _ months old before they are weened.
Example Output: six

Example Input: Zeolites have basically _ different structural variations.
Example Output: three

Example Input: Baby backs are about _ inches long and come from the part of the rib nearest the spine.
Example Output:
four