メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.008723703125 34.9927040238519, 137.008490712952 34.9930914155486, 137.008327449179 34.9933992446453, 137.008006452657 34.9933236094609, 137.006838592198 34.9930396641479, 137.006325230544 34.9929023581576, 137.006352235415 34.9928613355369, 137.006567769607 34.9925342110085, 137.006948790474 34.9920075057091, 137.008723703125 34.9927040238519)) ^^http://www.opengis.net/ont/geosparql#wktLiteral