メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.929060684782 35.1947489670864, 136.929077986043 35.1950630955854, 136.929079515221 35.1950906348231, 136.929101624847 35.1954923816468, 136.927932527632 35.1955337895946, 136.927919043953 35.1951325527442, 136.927907516675 35.1947890684175, 136.927895790822 35.1944400930245, 136.927942056993 35.1944392694022, 136.929040904826 35.1943651151809, 136.929060684782 35.1947489670864)) ^^http://www.opengis.net/ont/geosparql#wktLiteral