メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.705241058347 44.3644547038764, 141.704766622652 44.3647598507277, 141.704238202205 44.365093741176, 141.704192055324 44.3651234047045, 141.704139462064 44.365081877172, 141.703112794456 44.3642692095469, 141.703150162358 44.364245656916, 141.703451564287 44.3640555299219, 141.703695876728 44.3638964187911, 141.704160483156 44.3635939022892, 141.704246832572 44.3636626968816, 141.705241058347 44.3644547038764)) ^^http://www.opengis.net/ont/geosparql#wktLiteral