メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.330312774106 43.0554269720414, 141.330792683742 43.0554912426681, 141.330644716359 43.0560740682049, 141.330504054917 43.056604204949, 141.329971604067 43.0565382445738, 141.329925174046 43.0565325255753, 141.329810041097 43.0565162677074, 141.328972507464 43.0564056491434, 141.329061657126 43.0560563382619, 141.329101436893 43.0558528444892, 141.329252827097 43.0552858025607, 141.329387211173 43.0553036931505, 141.329369429435 43.0553767627233, 141.329454938031 43.0553858202892, 141.329472876415 43.0553150727168, 141.330312774106 43.0554269720414)) ^^http://www.opengis.net/ont/geosparql#wktLiteral