メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.608964086982 43.2961122366088, 144.607665103299 43.2965657624715, 144.607141835437 43.2954082700585, 144.60766696196 43.2947167776241, 144.608136551332 43.2949096219023, 144.608450917303 43.2950719120302, 144.608546314735 43.2951487058694, 144.608964086982 43.2961122366088)) ^^http://www.opengis.net/ont/geosparql#wktLiteral