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Associations of Ozone and PM2 . 5 Concentrations With Parkinson ' s Disease Among Participants in the Agricultural Health Study .
 Chemical: Ozone; Disease: Parkinson ' s Disease
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: Ozone; Disease: Parkinson ' s Disease