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: Fibber content increases ____ to four times that of whole wheat bread.

Output: three


Input: Consider Input: Calcite makes up ____ well known rocks limestone and marble.

Output: two


Input: Consider Input: Flu strikes within one to ____ days after exposure to the virus.


Output: three