メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.759050496712 43.189082742296, 141.759488674688 43.1892996859584, 141.758792002622 43.1900127041738, 141.758102812242 43.190749173663, 141.75730287267 43.1903549228948, 141.757226793085 43.1902358818862, 141.757578612748 43.1898662039202, 141.757647916139 43.1897879452198, 141.757890231865 43.1895409408391, 141.758558980557 43.1888294212886, 141.759050496712 43.189082742296)) ^^http://www.opengis.net/ont/geosparql#wktLiteral