メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.576064981033 43.3294500009308, 145.57662323917 43.32985074542, 145.575584747215 43.3306320449548, 145.575032953647 43.330243835423, 145.57448778637 43.3298639397361, 145.575008402361 43.3294701270681, 145.575545626624 43.3290630305707, 145.576064981033 43.3294500009308)) ^^http://www.opengis.net/ont/geosparql#wktLiteral