6858
Proximate composition , fatty acid profile , cholesterol , alpha - tocoferol content and essential ( K , Na , Cl , S , Mg , Ca , Zn , Cu , Fe , Mn , and Se ) and contaminant element ( Hg / MeHg , Cd , Pb , and As ) levels in silver scabbardfish ( Lepidopus caudatus ) , hake ( Merluccius merluccius ) , and ray ( Raja spp . ) were investigated .
 Chemical: fatty acid; Chemical: cholesterol; Chemical: alpha - tocoferol; Chemical: K; Chemical: Na; Chemical: Cl; Chemical: S; Chemical: Mg; Chemical: Ca; Chemical: Zn; Chemical: Cu; Chemical: Fe; Chemical: Mn; Chemical: Se; Chemical: Hg; Chemical: MeHg; Chemical: Cd; Chemical: Pb; Chemical: As; Chemical: silver
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: fatty acid; Chemical: cholesterol; Chemical: alpha - tocoferol; Chemical: K; Chemical: Na; Chemical: Cl; Chemical: S; Chemical: Mg; Chemical: Ca; Chemical: Zn; Chemical: Cu; Chemical: Fe; Chemical: Mn; Chemical: Se; Chemical: Hg; Chemical: MeHg; Chemical: Cd; Chemical: Pb; Chemical: As; Chemical: silver