メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.131141046154 43.6594959297244, 145.130463900176 43.6594737448152, 145.130357241411 43.6594673650547, 145.130003072831 43.659446133742, 145.130087752359 43.6583045877102, 145.130700077234 43.6583447598827, 145.130897525239 43.6583579543215, 145.131229783824 43.6583991434767, 145.131141046154 43.6594959297244)) ^^http://www.opengis.net/ont/geosparql#wktLiteral