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: Insomnia can be short-lived, lasting only one to ____ nights.
Example Output: two

Example Input: Niobium occurs primarily in ____ minerals, columbite and pyrochlore.
Example Output: two

Example Input: Chickadees live in family groups of ____ to nine members.
Example Output:
five