3493
To address the question about costs of living in polluted areas , biomarkers linked to metabolism were measured in Pterostichus oblongopunctatus ( Coleoptera : Carabidae ) collected along two metal - pollution gradients in the vicinity of the two largest Polish zinc smelters : ' Boles l aw ' and ' Miasteczko S l a skie ' in southern Poland .
 Chemical: zinc
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: zinc