メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.048801700338 34.0643702749367, 131.046282252395 34.0663310335228, 131.045709424263 34.0661719839714, 131.045768469402 34.0660003828327, 131.045770361585 34.0658564331131, 131.045523219613 34.0653552273989, 131.045366233996 34.0650069795657, 131.045097519327 34.0642352516539, 131.04443655977 34.0619832306982, 131.044408889894 34.0619764978129, 131.044400136164 34.0612847588333, 131.04519031442 34.0613298609721, 131.046056785766 34.0613588907659, 131.046609232447 34.0613596974677, 131.047374358776 34.0613083453207, 131.047819759102 34.0612182998483, 131.048801700338 34.0643702749367)) ^^http://www.opengis.net/ont/geosparql#wktLiteral