メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.389175235817 44.1762269164554, 142.390218987844 44.1763775683284, 142.389992335652 44.1770899936477, 142.389876122707 44.1775298590698, 142.389884776729 44.1777075039991, 142.389960015507 44.1780748145901, 142.389676572147 44.17802887337, 142.387720012446 44.1777478944721, 142.388130134542 44.1765408750448, 142.388288395922 44.1760750835509, 142.388273786765 44.1760165796388, 142.389154609812 44.1761554645772, 142.389175235817 44.1762269164554)) ^^http://www.opengis.net/ont/geosparql#wktLiteral