メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.354089447314 43.758658811166, 142.354962720952 43.7580171312679, 142.356290836553 43.7589492431347, 142.355828153556 43.7592576841992, 142.355430651103 43.7595731464029, 142.354705770555 43.7601146774861, 142.354132098396 43.7597441766693, 142.353744489226 43.7594602609755, 142.353377319634 43.7592132612238, 142.354089447314 43.758658811166)) ^^http://www.opengis.net/ont/geosparql#wktLiteral