22684
These findings suggest that PCB 180 , Aroclor 1221 and endosulfan may be estrogenic in immature uterotrophic assay .
 Chemical: PCB 180; Chemical: Aroclor 1221; Chemical: endosulfan
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: PCB 180, Aroclor 1221, endosulfan 
Answer:
 Chemical: PCB 180; Chemical: Aroclor 1221; Chemical: endosulfan