4072
C57BL / 6J , chosen as a " prototypic " mouse strain , was used to determine behavioral responses to a broad range ( 5 - 500 mg / kg ) of caffeine doses .
 Chemical: caffeine
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: caffeine