{ "items" : [
    { "id" : "http://ns.inria.fr/covid19/PMC6165534#title"
      "properties" : {
        "http://purl.org/dc/terms/subject" : [ "Polysaccharides",
          "RTT",
          "Chemical substances for emergency medicine",
          "Heparins",
          "World Health Organization essential medicines",
          "Aldols",
          "Glycosaminoglycans"] } } }
