メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.747338636432 35.4112062942414, 136.74730933404 35.4118490306861, 136.747282540648 35.4122064654662, 136.747261985271 35.4124968801725, 136.745776143031 35.4124426370115, 136.745896614021 35.4115881119289, 136.745951010253 35.4110764108394, 136.746041242546 35.4103966693632, 136.746697307817 35.4104327512458, 136.747388480514 35.4104421166546, 136.747396723767 35.4104863699766, 136.747371378138 35.4104890289402, 136.747338636432 35.4112062942414)) ^^http://www.opengis.net/ont/geosparql#wktLiteral