16035
In this study , the subject of heavy metal concentration in soil , rock , sediment , surface water and groundwater , which can be caused by natural or man - posed pollution , was analyzed in the industrial park of Rasht .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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