メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.396837857135 34.8318508584346, 137.396630691356 34.8318608968432, 137.395668667726 34.8319524997899, 137.395656764026 34.8319021645465, 137.395059188255 34.8314643579041, 137.394942624944 34.8315836732196, 137.394125057068 34.8310140027051, 137.394392623157 34.8309468780297, 137.395000492479 34.8313724843762, 137.395620572442 34.83121532294, 137.396535914282 34.831008583741, 137.396481028221 34.8303674167962, 137.39672397337 34.8303095595006, 137.396763528851 34.830709460281, 137.396837857135 34.8318508584346)) ^^http://www.opengis.net/ont/geosparql#wktLiteral