メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.354278454649 38.4176161194737, 141.353358334265 38.4176745347426, 141.353328370998 38.4173642709034, 141.353289823775 38.4172909603706, 141.353171896487 38.4172643133273, 141.352410422599 38.4172512122509, 141.352386332294 38.416892215431, 141.353243300107 38.4168422517039, 141.354502419451 38.4167696635761, 141.355997864134 38.4166924912289, 141.356022030292 38.4174498639187, 141.355163571358 38.4174922535413, 141.35466546351 38.4175272652576, 141.354278454649 38.4176161194737)) ^^http://www.opengis.net/ont/geosparql#wktLiteral