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The proposed approach can be used to evaluate whether selenium - contaminated plant waste materials harvested from high - selenium areas may be used to produce selenium - biofortified edible mushrooms based on the concentration , bioaccessibility and speciation of selenium in the mushrooms .
 Chemical: selenium; Chemical: selenium; Chemical: selenium; Chemical: selenium
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: selenium; Chemical: selenium; Chemical: selenium; Chemical: selenium