Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.

Input: Consider Input: Box turtles are mature and capable of mating at ____ years old.

Output: five


Input: Consider Input: Mollusks have one or ____ hearts.

Output: two


Input: Consider Input: Most astronauts sleep for just ____ hours.


Output: six