メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.995056582025 34.9951907679744, 136.994832814475 34.9952191106612, 136.993439803877 34.9953393637126, 136.993380047574 34.9948027029288, 136.993364456513 34.9946712670825, 136.993344222326 34.9945190480504, 136.99333218536 34.9943759265194, 136.993531546868 34.9940402162466, 136.993599322599 34.9940645404686, 136.993976473842 34.994206568983, 136.99504907296 34.9946089012555, 136.995056582025 34.9951907679744)) ^^http://www.opengis.net/ont/geosparql#wktLiteral