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Pork meat is generally recognised as a food with relevant nutritional properties because of its content in high biological value proteins , group B vitamins , minerals especially heme iron , trace elements and other bioactive compounds .
 Chemical: heme; Chemical: iron
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: heme; Chemical: iron