メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.415289280359 43.7530103809286, 142.415350707822 43.7535011211769, 142.413653190975 43.7536157730828, 142.413649998542 43.7535926238709, 142.412047578884 43.7536879022259, 142.411303697274 43.7537198151463, 142.411208938896 43.7527448840306, 142.411957521299 43.7526944883092, 142.413552870821 43.7526173466878, 142.413551846673 43.7526060795589, 142.415255171163 43.7525196015056, 142.415289280359 43.7530103809286)) ^^http://www.opengis.net/ont/geosparql#wktLiteral