15767
The present 2 - year inhalation study demonstrated hepatotumorigenicity of ETBE in male , but not in female rats .
 Chemical: ETBE
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: ETBE 
Answer:
 Chemical: ETBE