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: Orangutans spend up to ____ hours a day eating or foraging for food.
Example Output: six

Example Input: Neutrons consist of one up quark and ____ down quarks.
Example Output: two

Example Input: Diols contain ____ -OH groups.
Example Output:
two