{ "items" : [
    { "id" : "http://ns.inria.fr/covid19/PMC7126626#title"
      "properties" : {
        "http://purl.org/dc/terms/subject" : [ "Science experiments",
          "Software optimization",
          "Thermoelectricity",
          "Energy conversion",
          "Physical phenomena",
          "Energy technology",
          "Experiments",
          "Residential heating",
          "Causal inference",
          "Research",
          "Design of experiments",
          "Profilers",
          "Energy recovery",
          "Heat pumps",
          "Building engineering"] } } }
