In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
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Question: Violence has _ boundaries and effects every person no matter one's race or religion.

Answer: no


Question: Perennial grass takes _ to five years before it is mature enough to produce adequate seed.

Answer: three


Question: Irradiation makes _ changes in the fruit except for killing the fly larvae and retarding spoilage.

Answer:
no