メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.445367580548 43.7757455350262, 142.445542423907 43.7773076759035, 142.445551644332 43.7773923097346, 142.44562143581 43.7780330838256, 142.44415242944 43.7781291668265, 142.442045229303 43.7782197203616, 142.441883046287 43.7766643335766, 142.441854832084 43.7763353631238, 142.44184620892 43.7762233190843, 142.441802813704 43.7759975885383, 142.441771931782 43.7756908436315, 142.441766129499 43.7754345833498, 142.443894203129 43.7753337380906, 142.443892686535 43.7753227529188, 142.445315419849 43.7752523179889, 142.445367580548 43.7757455350262)) ^^http://www.opengis.net/ont/geosparql#wktLiteral