メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.846485665494 35.4121591552843, 136.847426397704 35.4122562887224, 136.847235063705 35.4137700808581, 136.847015787614 35.4153762266591, 136.84608438258 35.4153001077032, 136.84513500688 35.415211573093, 136.845333425453 35.4136015685636, 136.845539140602 35.4120807718087, 136.846485665494 35.4121591552843)) ^^http://www.opengis.net/ont/geosparql#wktLiteral