メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.355700291143 43.084011077623, 141.356352520089 43.0840995158382, 141.356208815298 43.0846712893941, 141.356110386598 43.0850854593163, 141.355940081409 43.0857968382702, 141.355347850079 43.0857119617298, 141.355283402344 43.0857031585467, 141.354374426471 43.0855792283378, 141.354545942088 43.0848781282972, 141.35462402505 43.084557056141, 141.354631780154 43.0845252585376, 141.354786098861 43.0838911168578, 141.355536155633 43.0839888361668, 141.355700291143 43.084011077623)) ^^http://www.opengis.net/ont/geosparql#wktLiteral