| http://www.w3.org/ns/prov#value | - hydrocarbons such as benzene, toluene, styrene, xylene, ethyl benzene, and cumene made from refined petroleum or liquid hydrocarbons.3251101Aromatics (benzene, toluene, xylene, etc), not made in a refinery32511011Aromatics (benzene, toluene, xylene, etc.), made in petrochemical plants3251101111Aromatics (benzene, toluene, xylene, etc.), for use as a chemical raw material, made in petrochemical pl
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