12907
Oxytocin ( 1 mu g / 0 . 2 mu l ) , vasotocin , an oxytocin antagonist ( 1 mu g / 0 . 2 mu l ) or vehicle was injected into the CeA 20 min before the BVE .
 Chemical: Oxytocin; Chemical: vasotocin; Chemical: oxytocin
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: Oxytocin, vasotocin, oxytocin 
Answer:
 Chemical: Oxytocin; Chemical: vasotocin; Chemical: oxytocin