メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.3255251068 43.7748499302629, 142.32600165 43.7753041719348, 142.326465979644 43.7757389746219, 142.324838939996 43.7766049569375, 142.324148584713 43.7769609186729, 142.323255747336 43.7774319647547, 142.322810936337 43.7769830003898, 142.322565985959 43.7767290153611, 142.322380793046 43.7765446445951, 142.321896952648 43.7760921505643, 142.322526296037 43.7757486187354, 142.323460576105 43.7752404036568, 142.325070530474 43.7743938953126, 142.3255251068 43.7748499302629)) ^^http://www.opengis.net/ont/geosparql#wktLiteral