メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.09480932275 35.2250209264907, 137.093559679458 35.2246017031173, 137.093844100599 35.2240291210563, 137.094008853735 35.2240616881272, 137.094325181184 35.2241267422841, 137.094605230732 35.2242188161925, 137.095122499835 35.2243839925638, 137.09480932275 35.2250209264907)) ^^http://www.opengis.net/ont/geosparql#wktLiteral