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: Gloves have ____ ridges or crevices in which the bacteria can hide.
Example Output: no

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

Example Input: Steroids are lipids made of ____ fused carbon rings.
Example Output:
four