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.

Example Input: Elephants have five toes on the fore feet and ____ on the hind feet.
Example Output: four

Example Input: White men are almost ____ times more likely to develop cancer of the testicles than are black men.
Example Output: five

Example Input: Infected rodents carry and secrete the virus for about ____ days.
Example Output:
seven