メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.12648827338 43.544159773809, 142.126191128405 43.5440394975373, 142.125682546702 43.5439057101123, 142.125334913146 43.5438233880348, 142.124940653395 43.5437535003866, 142.124852291911 43.543741452769, 142.12523642112 43.542246880965, 142.127695164319 43.5424136145988, 142.127574690215 43.5432373295208, 142.127004593672 43.5431733520324, 142.126727413011 43.5431615689184, 142.12648827338 43.544159773809)) ^^http://www.opengis.net/ont/geosparql#wktLiteral