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        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "Carbon black (subtypes are  acetylene black, channel black, furnace black, lamp black and thermal black) is a material produced by the incomplete combustion of heavy petroleum products such as FCC tar, coal tar, ethylene cracking tar, and a small amount from vegetable oil. Carbon black is a form of  paracrystalline carbon that has a high surface-area-to-volume ratio, albeit lower than that of activated carbon." ] ,
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        "http://dbpedia.org/ontology/thumbnail" : [ "http://commons.wikimedia.org/wiki/Special:FilePath/Carbon_black.jpg?width=300"] } } }
