メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((130.7250000 32.9250000, 130.7312500 32.9250000, 130.7312500 32.9291667, 130.7250000 32.9291667, 130.7250000 32.9250000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral