374
This effect is prevented by 2 - methyl - 6 - ( phenylethynyl ) pyridine hydrochloride ( MPEP ) , a selective mGlu5R antagonist .
 Chemical: 2 - methyl - 6 - ( phenylethynyl ) pyridine hydrochloride; Chemical: MPEP
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: 2 - methyl - 6 - ( phenylethynyl ) pyridine hydrochloride, MPEP 
Answer:
 Chemical: 2 - methyl - 6 - ( phenylethynyl ) pyridine hydrochloride; Chemical: MPEP