28290
METHODS : Seven adult rhesus monkeys , fitted with Actical (R) activity monitors , were trained to respond under a concurrent choice paradigm with food ( three 1 . 0 - g pellets ) and cocaine ( 0 . 003 - 0 . 3 mg / kg ) or saline presentation .
 Chemical: cocaine
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