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

Example Input: Soft money is the unlimited, unregulated money that has _ business influencing politics.
Example Output: no

Example Input: Whales have only _ enemies-man and the killer whale.
Example Output: two

Example Input: Syphilis proceeds in _ stages, with each stage separated by a period of latency.
Example Output:
three