{ "items" : [
    { "id" : "http://ns.inria.fr/covid19/PMC5103227#body_text"
      "properties" : {
        "http://purl.org/dc/terms/subject" : [ "Bacterium-related cutaneous conditions",
          "Problem solving methods",
          "Township form of New Jersey government",
          "Cytokines"] } } }
