8949
Additivity was observed during combined exposure to low concentrations of cocaine and mCPP as well as during combined exposure to MDA with cocaine or mCPP .
 Chemical: cocaine; Chemical: mCPP; Chemical: MDA; Chemical: cocaine; Chemical: mCPP
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: cocaine; Chemical: mCPP; Chemical: MDA; Chemical: cocaine; Chemical: mCPP