{ "items" : [
    { "id" : "http://caligraph.org/resource/Discoverer_21"
      "properties" : {
        "http://caligraph.org/ontology/previousMission" : [ "http://caligraph.org/resource/Discoverer_20" ] } },

    { "id" : "http://caligraph.org/resource/Discoverer_19"
      "properties" : {
        "http://caligraph.org/ontology/nextMission" : [ "http://caligraph.org/resource/Discoverer_20" ] } },

    { "id" : "http://caligraph.org/resource/Discoverer_20"
      "properties" : {
        "http://www.w3.org/1999/02/22-rdf-syntax-ns#type" : [ "http://caligraph.org/ontology/Space_mission",
          "http://www.w3.org/2002/07/owl#NamedIndividual" ] ,
        "http://www.w3.org/2000/01/rdf-schema#label" : [ "Discoverer 20" ] ,
        "http://www.w3.org/2002/07/owl#sameAs" : [ "http://dbpedia.org/resource/Discoverer_20" ] ,
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://en.wikipedia.org/wiki/Category:Lists_of_space_missions",
          "http://en.wikipedia.org/wiki/Category:Space_missions" ] ,
        "http://www.w3.org/2004/02/skos/core#prefLabel" : [ "Discoverer 20" ] ,
        "http://caligraph.org/ontology/landingDate" : [ "1962-07-28" ] ,
        "http://caligraph.org/ontology/launchDate" : [ "1961-02-17" ] ,
        "http://caligraph.org/ontology/launchVehicle" : [ "http://caligraph.org/resource/Thor-Agena" ] ,
        "http://caligraph.org/ontology/manufacturer" : [ "http://caligraph.org/resource/Lockheed_Corporation" ] ,
        "http://caligraph.org/ontology/nextMission" : [ "http://caligraph.org/resource/Discoverer_21" ] ,
        "http://caligraph.org/ontology/operator" : [ "http://caligraph.org/resource/National_Reconnaissance_Office",
          "http://caligraph.org/resource/United_States_Air_Force" ] ,
        "http://caligraph.org/ontology/previousMission" : [ "http://caligraph.org/resource/Discoverer_19"] } } }
