メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.807770004746 35.3495643479032, 136.807441254915 35.3495795000334, 136.807416578293 35.3493230817322, 136.807372489439 35.3491025224758, 136.807289659575 35.3489983998475, 136.807745098174 35.3487982678015, 136.807765659273 35.3488965705708, 136.807770004746 35.3495643479032)) ^^http://www.opengis.net/ont/geosparql#wktLiteral