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

Input: Consider Input: Reverse osmosis uses three to ten gallons of water to produce _ gallon of drinking water.

Output: one


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

Output: no


Input: Consider Input: Seahorses are small fish with a life span of one to _ years.


Output: five