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

Input: Consider Input: Germs have _ means of locomotion execpt to attach themselves to particles of dust.

Output: no

Input: Consider Input: Infertility affects one in _ couples and affects both men and women.

Output: seven

Input: Consider Input: Most lemmings are three to six inches in length and weigh less than _ ounces.
Output: four