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: Arthropods are made up of ____ groups of living animals and one group of extinct animals.
Example Output: four

Example Input: Theobroma oil can exist in four different polymorphic forms of which only ____ is stable.
Example Output: one

Example Input: Ozone produces ____ tastes or odors in the water.
Example Output:
no