22511
In this study , we addressed that puerarin attenuated 1 - methyl - 4 - phenyl - 1 , 2 , 3 , 6 - tetrahydropyridine ( MPTP ) - induced behavioral deficits , dopaminergic neuronal degeneration and dopamine depletion .
 Chemical: puerarin; Chemical: 1 - methyl - 4 - phenyl - 1 , 2 , 3 , 6 - tetrahydropyridine; Chemical: MPTP; Chemical: dopamine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: puerarin, 1 - methyl - 4 - phenyl - 1 , 2 , 3 , 6 - tetrahydropyridine, MPTP, dopamine 
Answer:
 Chemical: puerarin; Chemical: 1 - methyl - 4 - phenyl - 1 , 2 , 3 , 6 - tetrahydropyridine; Chemical: MPTP; Chemical: dopamine