メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.315291429569 43.0747566714758, 141.315851806039 43.0744269749159, 141.316708185372 43.0739230942319, 141.31674713486 43.0739040718196, 141.317663971158 43.0747271544365, 141.318482209547 43.0754615871326, 141.318555703648 43.0754991078574, 141.318597143066 43.075499445287, 141.318766754868 43.0754553231492, 141.319059509422 43.0753757731765, 141.319136876761 43.0753475680634, 141.319236697559 43.0755030334153, 141.319347733916 43.0756780723583, 141.319586302175 43.0760540239296, 141.318488606633 43.076521570007, 141.318407473091 43.0767349204844, 141.317748943336 43.0770203661407, 141.316586383513 43.0775242866131, 141.316576629399 43.077528567635, 141.316055494188 43.0770288449152, 141.314257624402 43.0753436249934, 141.314667354984 43.0751110223453, 141.315042538099 43.0748978981462, 141.315291429569 43.0747566714758)) ^^http://www.opengis.net/ont/geosparql#wktLiteral