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      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "The Convair F-106 Delta Dart was the primary all-weather interceptor aircraft of the United States Air Force from the 1960s through the 1980s. Designed as the so-called \"Ultimate Interceptor\", it proved to be the last dedicated interceptor in U.S. Air Force service to date. It was gradually retired during the 1980s, with the QF-106 drone conversions of the aircraft being used until 1998 under the Pacer Six Program." ] ,
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        "http://dbpedia.org/ontology/manufacturer" : [ "http://dbpedia.org/resource/General_Dynamics",
          "http://dbpedia.org/resource/Convair" ] ,
        "http://dbpedia.org/ontology/numberBuilt" : [ 342 ] ,
        "http://dbpedia.org/ontology/predecessor" : [ "http://dbpedia.org/resource/Convair_F-102_Delta_Dagger" ] ,
        "http://dbpedia.org/ontology/thumbnail" : [ "http://commons.wikimedia.org/wiki/Special:FilePath/ConvairF-106DeltaDart01.JPG?width=300" ] ,
        "http://dbpedia.org/ontology/type" : [ "http://dbpedia.org/resource/Interceptor_aircraft" ] ,
        "http://dbpedia.org/ontology/unitCost" : [ "2.51E7",
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