20130
Our findings suggest that the differential effects of 6 - NC and 1 , 2 - DHD - 6 - NC on AhR and ER alpha could potentially account for the higher carcinogenicity of 6 - NC in the rat mammary gland .
 Chemical: 6 - NC; Chemical: 1 , 2 - DHD - 6 - NC; Chemical: 6 - NC
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: 6 - NC, 1 , 2 - DHD - 6 - NC, 6 - NC 
Answer:
 Chemical: 6 - NC; Chemical: 1 , 2 - DHD - 6 - NC; Chemical: 6 - NC