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.

Ex Input:
Corporate mergers occur when ____ companies combine.

Ex Output:
two

Ex Input:
Most ovarian cysts go away on their own in ____ to three months without causing any problems.

Ex Output:
one

Ex Input:
Fire extinguishers have ____ parts.

Ex Output:
seven