メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.056195082071 34.8659496002332, 137.056079102764 34.8660000619082, 137.055303145353 34.8649506002256, 137.056029121437 34.8645917246659, 137.056245464893 34.864892510614, 137.056246499852 34.8648939205788, 137.056388063458 34.864814675816, 137.056714603986 34.8652431780843, 137.056677728554 34.8652621607011, 137.056730014852 34.8653321435787, 137.056929525462 34.8656117848968, 137.056195082071 34.8659496002332)) ^^http://www.opengis.net/ont/geosparql#wktLiteral