メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.051234154913 42.9009407933249, 143.051812946518 42.900986260249, 143.051660560217 42.9021820783084, 143.051079317425 42.902132759343, 143.050483432562 42.9020978179197, 143.050306217758 42.9020874501866, 143.049935510637 42.9020654924134, 143.049964839705 42.9016925907732, 143.049807940472 42.9016848244756, 143.049843317648 42.9013134984132, 143.049845749393 42.9012871765456, 143.049888704533 42.9008362508762, 143.050079646651 42.90085053233, 143.050249425531 42.9008632030142, 143.051234154913 42.9009407933249)) ^^http://www.opengis.net/ont/geosparql#wktLiteral