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        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "A Calculus of Angels is the second book in Gregory Keyes' The Age of Unreason series. It was initially published by Del Rey on March 30, 1999. A follow up to Newton's Cannon, the book is set in 1722 and continues the alternate history where Isaac Newton discovers that alchemy works, and a powerful science is built upon it." ] ,
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        "http://dbpedia.org/ontology/author" : [ "http://dbpedia.org/resource/Gregory_Keyes" ] ,
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        "http://dbpedia.org/ontology/coverArtist" : [ "http://dbpedia.org/resource/Therese_Nielsen" ] ,
        "http://dbpedia.org/ontology/dcc" : [ "813/.54 21" ] ,
        "http://dbpedia.org/ontology/isbn" : [ "ISBN 978-0-345-40607-1" ] ,
        "http://dbpedia.org/ontology/language" : [ "http://dbpedia.org/resource/English_language" ] ,
        "http://dbpedia.org/ontology/lcc" : [ "PS3561.E79 C35 1999" ] ,
        "http://dbpedia.org/ontology/literaryGenre" : [ "http://dbpedia.org/resource/Fantasy" ] ,
        "http://dbpedia.org/ontology/mediaType" : [ "http://dbpedia.org/resource/Paperback" ] ,
        "http://dbpedia.org/ontology/numberOfPages" : [ 406 ] ,
        "http://dbpedia.org/ontology/oclc" : [ "39695456" ] ,
        "http://dbpedia.org/ontology/previousWork" : [ "http://dbpedia.org/resource/Newton's_Cannon" ] ,
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        "http://dbpedia.org/ontology/series" : [ "http://dbpedia.org/resource/The_Age_of_Unreason" ] ,
        "http://dbpedia.org/ontology/subsequentWork" : [ "http://dbpedia.org/resource/Empire_of_Unreason"] } } }
