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

Example Input: All Jovian planets have rings around their equators and at least _ moons.
Example Output: eight

Example Input: Psychiatrists categorize symptoms into _ categories.
Example Output: three

Example Input: Copepods are so numerous that it is estimated that they compose _ out of every ten zooplankters.
Example Output:
seven