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: Substance abusers have ____ hundred percent higher medical costs and benefits.
Example Output: three

Example Input: Plants grow up to ____ feet tall and spread to about three feet.
Example Output: three

Example Input: Bowheads are slow swimmers and usually travel alone or in small herds of up to ____ animals.
Example Output:
six