<https://www.seismosoc.org/publications/the-seismic-record/bssa-srl-and-the-seismic-record-tsr/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.seismosoc.org/publications/the-seismic-record/bssa-srl-and-the-seismic-record-tsr/>