1084
Similar effect was demonstrated after pretreatment with the alpha 1 - adrenoceptor antagonist , prazosin ( 1 mg / kg , IP ) .
 Chemical: prazosin
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: prazosin