4934
Uncontaminated low ( 3 % ) , medium ( 11 % ) , and high ( 38 - 48 % ) carbon content soils from Macquarie Island were used to examine the influence of soil carbon on toxicity .
 Chemical: carbon; Chemical: carbon
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: carbon; Chemical: carbon