メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.393348964028 43.0727195329586, 141.393654965243 43.0731477396702, 141.394258141105 43.0739500017261, 141.392790319748 43.074477382273, 141.392749342946 43.0744921249678, 141.392239002365 43.0738027278451, 141.391810577362 43.0732522806114, 141.391564949768 43.0729255160448, 141.391378280509 43.0726772585645, 141.390746108398 43.0718182209699, 141.391187027366 43.0716580859658, 141.392460789282 43.0718495130887, 141.393348460932 43.0720050517383, 141.393249787982 43.0725806626194, 141.393348964028 43.0727195329586)) ^^http://www.opengis.net/ont/geosparql#wktLiteral