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: Nymphs are less than ____ millimeters in size.
Example Output: two

Example Input: Potential energy is divided into ____ different types of energy.
Example Output: three

Example Input: Most sharks have five pairs of gill slits, but some have ____ or seven pairs.
Example Output:
six