21387
Our study reports on the total mercury ( HgT ) concentrations measured in the muscles and livers of several benthic , demersal and pelagic fish species caught inside and outside of Augusta Bay ( southern Italy ) , a semi - enclosed marine area , highly contaminated by the uncontrolled ( since the 1950s to 1978s ) discharge of the largest European petrochemical plant .
 Chemical: mercury
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: mercury