メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.390852663071 34.81776129316, 137.390106081236 34.8178885815249, 137.389098753852 34.8181142380453, 137.388910099999 34.818160640417, 137.387818985571 34.8184346131651, 137.387247536106 34.8185994632313, 137.387164067114 34.8183977555829, 137.387100060812 34.8183574421698, 137.387808898604 34.8175163422859, 137.388034676608 34.8172899917264, 137.388757257004 34.8165116889778, 137.389945688082 34.8171565261691, 137.390633157116 34.8175885723761, 137.390789542039 34.8176844964952, 137.390852663071 34.81776129316)) ^^http://www.opengis.net/ont/geosparql#wktLiteral