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

Example Input: Humans have _ sides to their brain functions.
Example Output: two

Example Input: Tapirs have hoofed toes, with four toes on the front feet and _ toes on the hind feet.
Example Output: three

Example Input: Mites are arachnids, so they have _ legs.
Example Output:
eight