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: Scientists divide the mosses into ____ groups .
Example Output: eight

Example Input: Binary distillation is a separation of only ____ chemicals.
Example Output: two

Example Input: Cockatiels average ____ to five eggs per nest, with an egg typically laid every other day.
Example Output:
four