メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.77116697789 35.4343905885379, 136.770437576945 35.4344302279783, 136.770295032469 35.433344635026, 136.771082174228 35.4332045530569, 136.771154172198 35.4342115753445, 136.77116697789 35.4343905885379)) ^^http://www.opengis.net/ont/geosparql#wktLiteral