メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.338178053134 43.0547046521036, 141.338379045617 43.0547321357275, 141.338286741355 43.0552980448611, 141.337826525482 43.0552440194575, 141.33730316753 43.0551731709597, 141.336225775998 43.0550242603701, 141.336374206797 43.0545161203001, 141.336404385561 43.0545182599464, 141.336882623591 43.0545529541263, 141.337419457009 43.0546007025514, 141.337437831927 43.0546033103714, 141.337865751535 43.054661862514, 141.337893506999 43.0546656712512, 141.338073441752 43.0546903147103, 141.338178053134 43.0547046521036)) ^^http://www.opengis.net/ont/geosparql#wktLiteral