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Cerebral vasculitis following oral methylphenidate intake in an adult : a case report .
 Disease: Cerebral vasculitis; Chemical: methylphenidate
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: Cerebral vasculitis, methylphenidate 
Answer:
 Disease: Cerebral vasculitis; Chemical: methylphenidate