メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.77218337629 35.4474963743072, 136.772179156514 35.4477091351666, 136.769305061199 35.4480683775882, 136.769267534443 35.4478592118198, 136.769229964225 35.447650187428, 136.772184540845 35.4472573002916, 136.772183445584 35.4474821489371, 136.77218337629 35.4474963743072)) ^^http://www.opengis.net/ont/geosparql#wktLiteral