メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.506537860826 34.6884799760805, 135.506539145118 34.6888965008555, 135.505588686179 34.6889094098017, 135.50461929231 34.6889160365464, 135.503657581161 34.6889211372038, 135.503652007175 34.6885186804085, 135.503645964175 34.6881163632127, 135.504614221474 34.6881056545802, 135.505577229031 34.6880888606877, 135.506531595033 34.6880841366878, 135.506537860826 34.6884799760805)) ^^http://www.opengis.net/ont/geosparql#wktLiteral