メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.986318912932 43.5561319284729, 144.98605072857 43.5563631961124, 144.985849512587 43.5563652730775, 144.9857595416 43.556436761703, 144.985657380738 43.556367237438, 144.985344053599 43.5563704521076, 144.983815586948 43.55545672541, 144.984924690119 43.5545530926136, 144.985495492199 43.5548680582924, 144.985770626275 43.5550165908179, 144.985888976011 43.5550806642749, 144.985989280024 43.555134869382, 144.985458113147 43.5556737476135, 144.986318912932 43.5561319284729)) ^^http://www.opengis.net/ont/geosparql#wktLiteral