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:
Alligator gars have ____ rows of teeth.

Ex Output:
two

Ex Input:
Pertussis is highly contagious with symptoms that can linger six to ____ weeks.

Ex Output:
ten

Ex Input:
Many veterinarians now sterilize dogs and cats as young as ____ weeks of age.

Ex Output:
eight