27252
This radiation interacts with atoms in the atmosphere to create an air shower of secondary radiation , including X-rays , muons , protons , alpha particles , pions , electrons , and neutrons .
 location: X-rays
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: X-rays 
Answer:
 location: X-rays