メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.983489326421 35.0789147856899, 135.98340732725 35.0788211041794, 135.983323019798 35.0788267950087, 135.983191546871 35.078676128713, 135.984204626962 35.0780682905893, 135.984436154644 35.0783589099278, 135.983489326421 35.0789147856899)) ^^http://www.opengis.net/ont/geosparql#wktLiteral