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

Example Input: Wood has _ dimensions, width, length, thickness.
Example Output: three

Example Input: Diarrhea is an illness that kills _ and one-half million children per year.
Example Output: three

Example Input: Dingoes live to five or _ years of age in the wild and fifteen years in captivity.
Example Output:
six