メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.881028228382 35.1138801083849, 136.88102848101 35.1145129080691, 136.88040735735 35.1145108616741, 136.880398443723 35.1145108403683, 136.879820880898 35.1145089654017, 136.879726195953 35.1145086682834, 136.878779583167 35.1145094956132, 136.878806792162 35.113896837288, 136.879720529511 35.1138893096736, 136.881028228382 35.1138801083849)) ^^http://www.opengis.net/ont/geosparql#wktLiteral