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Analysis of heavy metal concentrations in BLCO showed that Zn > Fe > Pb > Cu > Ni .
 Chemical: Zn; Chemical: Fe; Chemical: Pb; Chemical: Cu; 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: Zn; Chemical: Fe; Chemical: Pb; Chemical: Cu; Chemical: Ni