529
Moreover , all adenosine receptor agonists : 2 - p - ( 2 - carboxyethyl ) phenethylamino - 5 ' - N - ethylcarboxamidoadenosine ( CGS 21680 ) , A2A receptor agonist , N6 - cyclopentyladenosine ( CPA ) , A1 receptor agonist , and 5 ' - N - ethylcarboxamidoadenosine ( NECA ) , A2 / A1 receptor agonist significantly and dose - dependently decreased cocaine - induced locomotor activity .
 Chemical: adenosine; Chemical: 2 - p - ( 2 - carboxyethyl ) phenethylamino - 5 ' - N - ethylcarboxamidoadenosine; Chemical: CGS 21680; Chemical: N6 - cyclopentyladenosine; Chemical: CPA; Chemical: 5 ' - N - ethylcarboxamidoadenosine; 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: adenosine; Chemical: 2 - p - ( 2 - carboxyethyl ) phenethylamino - 5 ' - N - ethylcarboxamidoadenosine; Chemical: CGS 21680; Chemical: N6 - cyclopentyladenosine; Chemical: CPA; Chemical: 5 ' - N - ethylcarboxamidoadenosine; Chemical: NECA; Chemical: cocaine