1057
Nicotine ( 0 . 25 mg / kg ) pretreatment blocked the caffeine - but not pentylenetetrazole - induced anxiety .
 Chemical: Nicotine; Chemical: caffeine; Chemical: pentylenetetrazole; Disease: anxiety
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: Nicotine; Chemical: caffeine; Chemical: pentylenetetrazole; Disease: anxiety