メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.364985373741 43.1021770389527, 141.365911341988 43.1022984669275, 141.365730522751 43.1030238179573, 141.365479494814 43.1041114342258, 141.364540764169 43.1039746454934, 141.364069685123 43.1039086960255, 141.364308840229 43.1029404735726, 141.364307946201 43.1029226739483, 141.364506767688 43.1021149001057, 141.364800883307 43.1021519140255, 141.364985373741 43.1021770389527)) ^^http://www.opengis.net/ont/geosparql#wktLiteral