{ "items" : [
    { "id" : "http://dbpedia.org/resource/Kelvin_wave"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "A Kelvin wave is a wave in the ocean or atmosphere that balances the Earth's Coriolis force against a topographic boundary such as a coastline, or a waveguide such as the equator.  A feature of a Kelvin wave is that it is non-dispersive, i.e., the phase speed of the wave crests is equal to the group speed of the wave energy for all frequencies."] } } }
