メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.868641775627 35.4011325371256, 136.868574862036 35.4016654630271, 136.868124606094 35.4016403240969, 136.868107895792 35.4018576745291, 136.866841063641 35.4017674598194, 136.86686868932 35.4015472498611, 136.866911380953 35.4010146159179, 136.866906910366 35.4009614365895, 136.866895716704 35.4008950709498, 136.866914496558 35.4008928645858, 136.86741221868 35.4008084797879, 136.868369429848 35.4006396084773, 136.868697576996 35.4005863436425, 136.868641775627 35.4011325371256)) ^^http://www.opengis.net/ont/geosparql#wktLiteral