メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.332705971221 42.9864297384083, 141.332713353287 42.9863970931736, 141.333167125112 42.986417679254, 141.334468195172 42.9865110811093, 141.33480646995 42.986555211706, 141.334648874019 42.9872282801406, 141.334566124393 42.9875631626672, 141.334404668036 42.9875526603128, 141.334153339557 42.9880470406781, 141.334067541089 42.988167322494, 141.333183990403 42.9881022256846, 141.332086543625 42.9880290756697, 141.332179602864 42.9873945285994, 141.332222383706 42.9870297167371, 141.332285739027 42.9865180094308, 141.332298580293 42.9864015751679, 141.332705971221 42.9864297384083)) ^^http://www.opengis.net/ont/geosparql#wktLiteral