メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.777384491507 35.4429014270882, 136.776527737051 35.4429877625893, 136.776297961642 35.4420912700972, 136.777341255656 35.4420157075987, 136.777369859564 35.4423123416273, 136.777314451272 35.4423105093025, 136.777333179916 35.4424686651979, 136.777355559999 35.4424675758586, 136.777387566856 35.4427005248848, 136.777370980506 35.4427050138852, 136.777386707127 35.4428791103227, 136.777384491507 35.4429014270882)) ^^http://www.opengis.net/ont/geosparql#wktLiteral