メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.976167835923 34.6807595434285, 137.9754231694 34.6808515161643, 137.975416640473 34.6808526717743, 137.974605463265 34.6809961111135, 137.974470995409 34.6803625580132, 137.975287093183 34.6802492469362, 137.975323799447 34.6802441498679, 137.975330805723 34.6802765750869, 137.975333200823 34.6803023410036, 137.97603497079 34.680191961996, 137.976167835923 34.6807595434285)) ^^http://www.opengis.net/ont/geosparql#wktLiteral