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: Crustaceans have ____ pairs of antennae.
Example Output: two

Example Input: Immature house centipedes start with ____ body segments.
Example Output: four

Example Input: Most chick mortality occurs within ____ days after hatching.
Example Output:
six