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.

Input: Consider Input: Threshold is a value to avoid ____ divide.

Output: zero


Input: Consider Input: Natural ytterbium is a mixture of ____ stable isotopes, with seven other unstable isotopes known.

Output: seven


Input: Consider Input: Catamarans have ____ hulls and are noted for their stability.


Output: two