メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.765186918019 35.3928771381615, 136.7646224143 35.3929574529744, 136.764471798041 35.3920913181318, 136.764274106088 35.3910948843278, 136.764328812353 35.3910663333166, 136.764840605088 35.3910082411265, 136.765016921173 35.3919901656163, 136.765186918019 35.3928771381615)) ^^http://www.opengis.net/ont/geosparql#wktLiteral