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: Endospores exhibit ____ signs of life, being described as cryptobiotic.
Example Output: no

Example Input: Many people have ____ symptoms until they suffer chest pains or a heart attack.
Example Output: no

Example Input: Babies crawl into a pouch on the mother's belly and stay there ____ months.
Example Output:
four