メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.776527737051 35.4429877625893, 136.775584677983 35.4430906102483, 136.775221152946 35.4431619021515, 136.775059439106 35.4426601616321, 136.775364528538 35.4425987861334, 136.775201464233 35.4422603120816, 136.776297961642 35.4420912700972, 136.776527737051 35.4429877625893)) ^^http://www.opengis.net/ont/geosparql#wktLiteral