メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.98215152412 43.5567254208773, 144.981604135935 43.5571888654692, 144.980543746898 43.5566613730627, 144.980028148481 43.556386726933, 144.979434161397 43.5562515989913, 144.979388391473 43.5565738715207, 144.978277853878 43.5562625907298, 144.978494755761 43.5556874455086, 144.980663755089 43.5563003026545, 144.981627601258 43.5566815549535, 144.98215152412 43.5567254208773)) ^^http://www.opengis.net/ont/geosparql#wktLiteral