{ "items" : [
    { "id" : "http://ns.inria.fr/covid19/PMC2652750#title"
      "properties" : {
        "http://purl.org/dc/terms/subject" : [ "BRICS nations",
          "Tuberculosis",
          "Health effects of tobacco",
          "Causes of death",
          "RTT(full)"] } } }
