メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.720618512807 35.1778969292035, 136.720605865436 35.1779985001595, 136.720478844709 35.1780047958406, 136.720491143936 35.1777312555894, 136.720546920482 35.1775146331665, 136.720626208847 35.1772881671046, 136.720696843475 35.1771383586914, 136.720857033797 35.1768689508424, 136.721054072984 35.176935585623, 136.720938380753 35.1771062145428, 136.720840456425 35.1772743746242, 136.72071885848 35.1774895582899, 136.720633006998 35.1777321262369, 136.720618512807 35.1778969292035)) ^^http://www.opengis.net/ont/geosparql#wktLiteral