メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.404630116719 43.0036331449227, 144.405042820802 43.0039045804937, 144.404462808311 43.0043723525703, 144.403940280484 43.0048237089049, 144.402875020531 43.004135117475, 144.402861890284 43.0041267836426, 144.402491182978 43.0038833145792, 144.402997787792 43.0037273636216, 144.403526002887 43.0035647448288, 144.404317998353 43.003349968402, 144.404349719412 43.0033802458046, 144.40460644683 43.0036138984288, 144.404630116719 43.0036331449227)) ^^http://www.opengis.net/ont/geosparql#wktLiteral