メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.72681045271 35.4730913570256, 136.726787775533 35.4772336431676, 136.724239259635 35.4734504842885, 136.723681527446 35.4718092776465, 136.723784183965 35.4718084572368, 136.723942944124 35.4718587172503, 136.725682133525 35.4718591518988, 136.725952771902 35.471922316902, 136.726190005883 35.4719788465336, 136.726601067539 35.4719985095993, 136.726841297494 35.4720187124392, 136.72715478619 35.4721016782786, 136.726813951687 35.4727015678923, 136.72681045271 35.4730913570256)) ^^http://www.opengis.net/ont/geosparql#wktLiteral