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Definition of an incident An " incident " of chemical food contamination may be defined as an episodic occurrence of adverse health effects in humans ( or animals that might be consumed by humans ) following high exposure to particular chemicals , or instances where episodically high concentrations of chemical hazards were detected in the food chain , and traced back to a particular event .
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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:  
Answer:
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