{ "items" : [
    { "id" : "http://dbpedia.org/resource/Porous_silicon"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "Porous silicon (p-Si) is a form of the chemical element silicon that has introduced nanoporous holes in its microstructure, rendering a large surface to volume ratio in the order of 500 m2/cm3."] } } }
