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: Copper has ____ naturally occurring isotopes.
Example Output: two

Example Input: Penguins have ____ seasons in their year, as follows.
Example Output: four

Example Input: Zygotes have ____ copies of all chromosomes.
Example Output:
two