11229
Catalepsy latency : caffeine ED50 = 27 . 0 mu mol / kg [ 95 % CI , 21 . 1 - 34 . 6 ] ; theophylline ED50 = 28 . 8 mu mol / kg [ 95 % CI , 22 . 5 - 36 . 7 ] .
 Chemical: caffeine; Chemical: theophylline
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: caffeine; Chemical: theophylline