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: Kinetic energy consists of ____ types of energies.
Example Output: three

Example Input: Human malaria is caused by ____ species of Plasmodium . .
Example Output: four

Example Input: Decoction is made by using ____ ounces of the root to one quart of water, and boil.
Example Output:
three