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: Animals exhibit ____ patterns for bringing sperm and eggs together.
Example Output: two

Example Input: All cars are things that have ____ wheels.
Example Output: four

Example Input: Lead chloride is almost ____ times more soluble in hot water than cold.
Example Output:
three