メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.839285139998 43.075443345776, 142.839181226352 43.0754221492645, 142.838801142547 43.0753444942151, 142.838682007943 43.0753216184356, 142.838479349814 43.0752826445568, 142.838178873782 43.0752429072764, 142.837963813493 43.0752211573612, 142.838738999777 43.0733581241223, 142.839996953385 43.0736383027474, 142.839380666089 43.0749750858239, 142.839333073838 43.0753346490381, 142.839285139998 43.075443345776)) ^^http://www.opengis.net/ont/geosparql#wktLiteral