530
CPA reduced cocaine action at the doses which , given alone , did not influence motility , while CGS 21680 and NECA decreased the action of cocaine at the doses which , given alone , decreased locomotor activity in animals .
 Chemical: CPA; Chemical: cocaine; Chemical: CGS 21680; Chemical: NECA; Chemical: cocaine
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: CPA; Chemical: cocaine; Chemical: CGS 21680; Chemical: NECA; Chemical: cocaine