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: Aardvarks have ____ toes on the front feet and five toes on their back feet.

Output: four


Input: Consider Input: Electric power means no gas or oil to spill, and ____ pollution in the air.

Output: no


Input: Consider Input: Spermatogenesis produces ____ haploid spermatids from the precursor cell.


Output: four