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Chronic exposure to PCPA alone significantly decreased locomotor activity and increased irritability but had no effect on sexual behavior , partner preference , or aggression .
 Chemical: PCPA; Disease: irritability; Disease: aggression
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: PCPA; Disease: irritability; Disease: aggression