メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.049845749393 42.9012871765456, 143.049843317648 42.9013134984132, 143.049807940472 42.9016848244756, 143.049964839705 42.9016925907732, 143.049935510637 42.9020654924134, 143.049504583537 42.9020399437527, 143.048795169997 42.9019848254267, 143.048641848658 42.9017985258931, 143.047713726627 42.9006707234446, 143.048306876493 42.9007211019606, 143.048456968176 42.900731591544, 143.04885443127 42.9007593463202, 143.048989440164 42.9007687438778, 143.049888704533 42.9008362508762, 143.049845749393 42.9012871765456)) ^^http://www.opengis.net/ont/geosparql#wktLiteral