メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.627829626763 35.3635780369627, 136.627211781976 35.3635653516572, 136.627214357039 35.363248325665, 136.627174624378 35.362661044885, 136.628051522559 35.3626670702983, 136.627993005517 35.3630267321996, 136.627834597068 35.363547989538, 136.627829626763 35.3635780369627)) ^^http://www.opengis.net/ont/geosparql#wktLiteral