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

Ex Input:
Cats nurse their kittens up to _ weeks long.

Ex Output:
eight


Ex Input:
Diarrhea is an illness that kills _ and one-half million children per year.

Ex Output:
three


Ex Input:
Some people experience _ symptoms when first infected.

Ex Output:

no