メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.258840927247 35.4830635908714, 134.257907215903 35.4835967103903, 134.257459936046 35.482886456096, 134.258743034292 35.4821674997194, 134.259212438539 35.4818869423989, 134.260131179092 35.4823268424463, 134.258840927247 35.4830635908714)) ^^http://www.opengis.net/ont/geosparql#wktLiteral