メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.44122838763 43.0479552560404, 141.441207572657 43.0485910374214, 141.441172239371 43.0492222852083, 141.440240172109 43.0493836395473, 141.43889740083 43.0496160767377, 141.438893659149 43.0489972125723, 141.438893662505 43.0489896875762, 141.438915626982 43.0483703726028, 141.43891579495 43.0483648877924, 141.438932444465 43.0477122688889, 141.439318419722 43.0476462897373, 141.439832138406 43.0475573004386, 141.439946152467 43.0475356013973, 141.440269062182 43.0474816211505, 141.44036133627 43.0474651126032, 141.440653528281 43.0474135165949, 141.441270397759 43.0473119579192, 141.44122838763 43.0479552560404)) ^^http://www.opengis.net/ont/geosparql#wktLiteral