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Coumarin ( 1 , 2 - benzopyrone ) was previously reported as responsible for some biological activities of this plant species .
 Chemical: Coumarin; Chemical: 1 , 2 - benzopyrone
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: Coumarin; Chemical: 1 , 2 - benzopyrone