{ "items" : [
    { "id" : "http://ns.inria.fr/covid19/PMC2981877#body_text"
      "properties" : {
        "http://purl.org/dc/terms/subject" : [ "Glycoproteins",
          "Pharmacokinetics",
          "Peptides",
          "Arab inventions",
          "Molecular genetics",
          "Immune system"] } } }
