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: Prokaryotes mean they have ____ nucleus in which they store genetic material.
Example Output: no

Example Input: Differentiation is caused by the energy going in ____ directions.
Example Output: two

Example Input: Elderly populations are also skewed, with more than ____ women for each man at some ages.
Example Output:
four