メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.833367684527 34.8932713624857, 136.832796533418 34.8939520196736, 136.832220107584 34.8946140657157, 136.832104692849 34.8945806080378, 136.831828486228 34.8945005385594, 136.831530752602 34.8944142274186, 136.829565276851 34.89386723693, 136.82910441258 34.8937406414462, 136.829122137354 34.8936856153965, 136.831284406345 34.8930109994741, 136.831592790221 34.8929199188449, 136.831647926721 34.8929082087954, 136.832183047166 34.8928758302689, 136.833077284445 34.8928232536212, 136.83373693413 34.8927819195221, 136.833367684527 34.8932713624857)) ^^http://www.opengis.net/ont/geosparql#wktLiteral