メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.927362848797 34.8923741433336, 136.927438436444 34.8924831788026, 136.927638991204 34.8927698063145, 136.92783235246 34.893061419899, 136.927929051886 34.8932453649252, 136.927706103162 34.8933140910223, 136.927638770833 34.8932098609933, 136.927207851359 34.8933922758456, 136.927006446227 34.8930894474254, 136.926427920733 34.8933489726434, 136.925396534473 34.8916102991375, 136.925775722516 34.8913222121902, 136.926344412688 34.8909053978316, 136.927362848797 34.8923741433336)) ^^http://www.opengis.net/ont/geosparql#wktLiteral