メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.881117734737 43.8281677060146, 143.88099942602 43.8291700931686, 143.880921929568 43.8297975346989, 143.879220845202 43.8296748607936, 143.877043756167 43.8295219064268, 143.877546878469 43.8289278344003, 143.878117303436 43.8282320638412, 143.878190113511 43.8281432547944, 143.878545681512 43.828002784494, 143.879954394218 43.8273287744541, 143.880341053534 43.8271390186562, 143.880624730607 43.8270267649753, 143.880954850461 43.8269153253658, 143.881275745902 43.8268288535837, 143.881117734737 43.8281677060146)) ^^http://www.opengis.net/ont/geosparql#wktLiteral