メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.529024086848 39.2206726230436, 140.528503173469 39.2208805696592, 140.528649351837 39.2212403697181, 140.528193056475 39.2213065317859, 140.527887740131 39.2213581666293, 140.527472212888 39.2203507501589, 140.528607121628 39.2198693727525, 140.529024086848 39.2206726230436)) ^^http://www.opengis.net/ont/geosparql#wktLiteral