In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Input: Consider Input: Economists divide resources into _ basic categories of land, labor, capital, and management.

Output: four


Input: Consider Input: Professional chefs use _ tools to keep knives sharp.

Output: two


Input: Consider Input: Men usually have _ symptoms but carry the organism in the urethra.


Output: no