メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.2968379363 43.113385830353, 141.297950204662 43.1144151229812, 141.297565908041 43.1146208060711, 141.2972087113 43.1148245329716, 141.296846754138 43.1150132398292, 141.296706905537 43.115098511129, 141.296158876435 43.1154372955544, 141.294725081876 43.1140848792191, 141.29543849267 43.113697267461, 141.295759091368 43.113519545593, 141.296483697514 43.1131335681557, 141.2968379363 43.113385830353)) ^^http://www.opengis.net/ont/geosparql#wktLiteral