メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.428175545763 43.806843745315, 142.428505626408 43.8070495352104, 142.428680824013 43.8071527209046, 142.42896720158 43.8073337715274, 142.429199584474 43.8074714120533, 142.429166252797 43.8074989061591, 142.429635563075 43.8077948538817, 142.430222870234 43.8081591224525, 142.42900996904 43.809130204515, 142.428494014619 43.8088049515519, 142.428473740749 43.8087917633509, 142.427983945574 43.8084732881187, 142.42750111423 43.8081685649882, 142.426975092666 43.8078446206712, 142.426430474123 43.8074964770271, 142.427633856858 43.8065054479822, 142.428175545763 43.806843745315)) ^^http://www.opengis.net/ont/geosparql#wktLiteral