メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.695080916601 35.3408222247282, 136.693892404201 35.3409513010197, 136.693607371144 35.3389305204121, 136.694792170717 35.3388146698891, 136.694953932178 35.3398543957953, 136.695080916601 35.3408222247282)) ^^http://www.opengis.net/ont/geosparql#wktLiteral