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: Romantic love involves ____ people.

Output: two


Input: Consider Input: Mollusks have one or ____ hearts.

Output: two


Input: Consider Input: Rodents have four toes on their front feet and ____ on the hind.


Output: five