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

Example Input: Muskrats are semi-aquatic and prefer locations with four to _ feet of water.
Example Output: six

Example Input: Most children recover from croup in _ to five days.
Example Output: three

Example Input: Mango trees grown from seed can take up to _ years to bear fruit.
Example Output:
eight