メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.677281447781 34.8344950754178, 134.676262843862 34.8348567219494, 134.675917884519 34.8341459511799, 134.675771096205 34.8338370453596, 134.676323408174 34.8336622176793, 134.676817040549 34.8335059610204, 134.677102880065 34.8340949862408, 134.677281447781 34.8344950754178)) ^^http://www.opengis.net/ont/geosparql#wktLiteral