10154
Ebullition , the release of gas from anaerobic decomposition in sediments , was recorded in a mercury - contaminated depositional zone ( Zone 1 ) of the St .
 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