{ "items" : [
    { "id" : "http://dbpedia.org/resource/Nuclear_pumped_laser"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "A nuclear pumped laser is a laser pumped with the energy of fission fragments. The lasing medium is enclosed in a tube lined with uranium-235 and subjected to high neutron flux in a nuclear reactor core. The fission fragments of the uranium create excited plasma with inverse population of energy levels, which then lases. Other methods, e.g."] } } }
