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

Ex Input:
Roundworms are fairly large worms that can grow to be _ or five inches long.

Ex Output:
four


Ex Input:
Smokers die an average of six to _ years earlier than nonsmokers.

Ex Output:
eight


Ex Input:
Some ticks feed on only one host throughout all _ life stages.

Ex Output:

three