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

Example Input: Some school boards have _ teacher-librarians at all.
Example Output: no

Example Input: College students are _ times more likely to become infected than healthy adults.
Example Output: five

Example Input: Life is change - most of the cells in our body are replaced, at the most, each _ years.
Example Output:
seven