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:
Death occurs after ingestion of ____ grams of quinine.

Ex Output:
eight


Ex Input:
Cytochrome oxidase consists of two cytochromes and ____ copper atoms.

Ex Output:
two


Ex Input:
Carbon can have six, seven, or ____ neutrons.

Ex Output:

eight