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: Most people stay three or four years, sometimes five or ____ years.
Example Output: six

Example Input: Most health professionals recommend approximately ____ hours of sleep each night.
Example Output: eight

Example Input: Duodenal ulcers are ____ times more common than gastric ulcers.
Example Output:
three