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

Example Input: Telescopes come in _ basic types - refractors and reflectors.
Example Output: two

Example Input: Ostrichs only have _ toes, and one toenail.
Example Output: two

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