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

Input: Consider Input: Bilinear interpolation uses a weighted average of the _ nearest pixels.

Output: four


Input: Consider Input: Hoatzin has typical foot with _ toes forwards and one backwards.

Output: three


Input: Consider Input: Wombats have _ incisor teeth that continue to grow throughout their lives.


Output: four