メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.623970239523 42.8317938443186, 141.625411036921 42.8312659262398, 141.625739312925 42.8317554054302, 141.62600218734 42.8321260877575, 141.626286189471 42.8325388718778, 141.626525649359 42.832900915097, 141.626769098698 42.8332513733772, 141.62694706261 42.8335382455806, 141.626000133711 42.83387665938, 141.625510098122 42.8340517861531, 141.62420491542 42.8345436637429, 141.624189543947 42.8345233940223, 141.623871659011 42.8346554274697, 141.62339392377 42.8339248667982, 141.622876311488 42.8331982346749, 141.622331914227 42.8323814280169, 141.622635451501 42.8322734443817, 141.623970239523 42.8317938443186)) ^^http://www.opengis.net/ont/geosparql#wktLiteral