メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.870987142857 35.0974345745345, 136.870988077921 35.097425140798, 136.871367264102 35.0974457816516, 136.871349267494 35.0976276233931, 136.871316612012 35.0979573736167, 136.871284001712 35.0982867020941, 136.871268429905 35.0984439740523, 136.870888481789 35.0984254436169, 136.870418429188 35.0983897215802, 136.870461819047 35.0978852239373, 136.870502993448 35.0974065637204, 136.870987142857 35.0974345745345)) ^^http://www.opengis.net/ont/geosparql#wktLiteral