メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.916807666776 35.1910177417226, 136.916568097575 35.1910073105135, 136.916564608691 35.1910192751298, 136.916399563397 35.1910237892936, 136.91640439117 35.1909808407561, 136.916187468844 35.1909846816963, 136.916181375344 35.1911537577946, 136.915997043953 35.1911673859758, 136.915987732311 35.1912731441456, 136.915647637176 35.1912922196949, 136.915647119916 35.1912650349984, 136.915643059769 35.1908059293819, 136.916204427399 35.1907973887842, 136.916825547723 35.1907879140506, 136.916807666776 35.1910177417226)) ^^http://www.opengis.net/ont/geosparql#wktLiteral