メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.9312500 35.2500000, 133.9375000 35.2500000, 133.9375000 35.2541667, 133.9312500 35.2541667, 133.9312500 35.2500000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral