12178
OBJECTIVE : To establish if serum levels of interleukin - 10 ( IL - 10 ) in subjects exposed to benzene are connected with age , working years , and employment age .
 Chemical: benzene
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: benzene