メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.469867442485 40.6108815529473, 140.469448529265 40.6109156991861, 140.468889703749 40.6110156110392, 140.468635887016 40.6100913330862, 140.469216148155 40.6099871257116, 140.46961458293 40.6099147121501, 140.469716617741 40.6103362092212, 140.469788949491 40.610536682027, 140.469857939411 40.6106429313046, 140.469867442485 40.6108815529473)) ^^http://www.opengis.net/ont/geosparql#wktLiteral