メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.117583814323 36.7572899092527, 137.117081869034 36.7573539153698, 137.116984911364 36.7573492993979, 137.116876548297 36.7573401023798, 137.115924176234 36.75715608823, 137.1162957303 36.7558712603571, 137.116550097311 36.7549741815174, 137.116989222689 36.7550294208565, 137.117531053992 36.7550112653638, 137.11755322391 36.756034698019, 137.117598319673 36.7568928961625, 137.117583814323 36.7572899092527)) ^^http://www.opengis.net/ont/geosparql#wktLiteral