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

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

Example Input: Female cats have ____ X-chromosomes.
Example Output:
two