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

Example Input: Cats nurse their kittens up to _ weeks long.
Example Output: eight

Example Input: New species are believed to arrive in the Mediterranean at the rate of _ to five annually.
Example Output: four

Example Input: Maps have _ or more bar scales, each in a different unit of measure.
Example Output:
three