メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.330253088053 43.7598723818324, 142.330696397083 43.760008668829, 142.331083663845 43.7601339008334, 142.330704190042 43.7607617665465, 142.330416185493 43.7612295892609, 142.330225947979 43.7611731147442, 142.329620208968 43.7609892073982, 142.329599184901 43.7609828222239, 142.328855216453 43.7607445967471, 142.329234709048 43.760116753799, 142.329515910074 43.7596341738752, 142.329560073623 43.7596489112825, 142.330198732446 43.7598551918475, 142.330253088053 43.7598723818324)) ^^http://www.opengis.net/ont/geosparql#wktLiteral