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: Inversions have the classic double loop at meiosis, and have ____ crossovers when heterozygotes.
Example Output: no

Example Input: Prairie dogs bear four or ____ young per litter.
Example Output: five

Example Input: Natural lithium contains ____ isotopes.
Example Output:
two