メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((128.7250000 32.6833333, 128.7312500 32.6833333, 128.7312500 32.6875000, 128.7250000 32.6875000, 128.7250000 32.6833333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral