メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.369964584116 43.1508724270395, 141.369479080568 43.151076787072, 141.368728996765 43.1513444373794, 141.368056390222 43.1509456720101, 141.367933399117 43.1508750237883, 141.367613198616 43.1506849773816, 141.367232512848 43.1504663292088, 141.367367706042 43.1503495027623, 141.368305911173 43.1493888754823, 141.368831248244 43.1495606013575, 141.36952292548 43.1498211000995, 141.370675527354 43.1502048502842, 141.370214309196 43.150746071281, 141.369964584116 43.1508724270395)) ^^http://www.opengis.net/ont/geosparql#wktLiteral