メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.003169723138 34.9885994903019, 137.002717978081 34.9883546448567, 137.002393266153 34.988179901609, 137.002212093372 34.9880845822715, 137.001822987216 34.9878881300572, 137.001379174531 34.9876339240052, 137.001113303481 34.9874863724616, 137.000896835892 34.9873736774237, 137.000516235858 34.9871738526579, 137.000638999533 34.9869240103387, 137.000920660868 34.9864510647104, 137.002235900403 34.9869673813328, 137.003720928347 34.9871450949143, 137.003560405309 34.9875798993732, 137.003169723138 34.9885994903019)) ^^http://www.opengis.net/ont/geosparql#wktLiteral