27371
RESULTS : Plasma Hg levels were found to be 3 . 76 +/- 1 . 84 , 3 . 54 +/- 1 . 83 , and 2 . 69 +/- 0 . 97 micro g / L in groups 1 , 2 , and 3 , respectively .
 Chemical: Hg
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: Hg