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: Kayak paddles have ____ blades, canoe paddles have one.

Output: two


Input: Consider Input: Calcite makes up ____ well known rocks limestone and marble.

Output: two


Input: Consider Input: Biology is a survey of the diversity of life, including all ____ King doms, viruses and prions.


Output: six