15398
Effects of alcohol and caffeine were found on the performance tasks ( all p values < 0 . 05 ) but these were independent effects .
 Chemical: alcohol; Chemical: caffeine
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: alcohol; Chemical: caffeine