メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((129.7312500 32.8291667, 129.7375000 32.8291667, 129.7375000 32.8333333, 129.7312500 32.8333333, 129.7312500 32.8291667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral