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Rosemary extract and its hexane fraction are important for the prevention of phosphorylation of MAPKs , thereby blocking NF - kB activation , which in turn leads to decreased expression of iNOS and COX - 2 , thus preventing inflammation .
 Chemical: hexane
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: hexane