メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.324644955547 37.0818513131404, 138.324468810067 37.0803838911279, 138.324288080577 37.0797979557719, 138.324780588449 37.0797453919023, 138.324847287856 37.0797413362744, 138.32495485706 37.0797989425871, 138.326037103671 37.0797965244552, 138.326124261258 37.0798130548382, 138.326180606794 37.07984601452, 138.326252303472 37.0798995551844, 138.326293148322 37.0799776191355, 138.326425728931 37.0803190480926, 138.326507412689 37.0804875664559, 138.326195692327 37.0811056559957, 138.326185190279 37.0812125079996, 138.326353284737 37.0817264014285, 138.324644955547 37.0818513131404)) ^^http://www.opengis.net/ont/geosparql#wktLiteral