メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.149425471734 35.0944065696613, 137.149609681641 35.0946347121836, 137.149672275173 35.0947294474229, 137.149209170001 35.0949774101248, 137.149156569806 35.0948380979749, 137.149129179017 35.0947254105757, 137.149122855902 35.0945660338362, 137.149120228054 35.0945570187679, 137.149417149932 35.0944099487186, 137.149425471734 35.0944065696613)) ^^http://www.opengis.net/ont/geosparql#wktLiteral