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: Neuroblasts delaminate in five waves spanning approximately ____ hours.
Example Output: three

Example Input: Deer show ____ symptoms of the disease.
Example Output: no

Example Input: Some people thrive on stress, can sleep ____ hours a night and wake up clear-headed.
Example Output:
four