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

Example Input: Brown bears grow from six and a half to _ feet long.
Example Output: nine

Example Input: Cities have various sizes, and can contain from _ to four armies depending on size.
Example Output: one

Example Input: Antimony trioxide is found in _ minerals, valentinite and senarmontite.
Example Output:
two