メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.865284287725 35.1561918232182, 136.865266279532 35.156471717804, 136.865267274076 35.1567606036769, 136.865257685176 35.1570238984082, 136.864866518941 35.1570383481605, 136.86445096097 35.1570516802618, 136.864441484587 35.156761365444, 136.864456130867 35.1561914528703, 136.864435298932 35.1557542031428, 136.864421852343 35.1557033230843, 136.864802182531 35.1556839876329, 136.865195570734 35.1556640497097, 136.865243795849 35.1559461506453, 136.865284287725 35.1561918232182)) ^^http://www.opengis.net/ont/geosparql#wktLiteral