21705
In this study , lead ( Pb ) , cadmium ( Cd ) and nickel ( Ni ) were determined in soil , water , vegetable and fruit samples taken from around oil refinery region in Batman , Turkey .
 Chemical: Pb; Chemical: cadmium; Chemical: Cd; Chemical: nickel; Chemical: Ni
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: Pb; Chemical: cadmium; Chemical: Cd; Chemical: nickel; Chemical: Ni