{ "items" : [
    { "id" : "http://ns.inria.fr/covid19/PMC5610480#title"
      "properties" : {
        "http://purl.org/dc/terms/subject" : [ "Antivirals",
          "Cytokines",
          "Groups (periodic table)",
          "Metabolism",
          "Pyrimidines",
          "Biocides",
          "Periodic table"] } } }
