メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.389676669598 44.184525226451, 142.389622883666 44.1846463592321, 142.388117245993 44.1843909278132, 142.388343079873 44.1836940845357, 142.389419477373 44.1838908118246, 142.389410134168 44.1839224652896, 142.389537578867 44.1839528617896, 142.389548201487 44.1839143339862, 142.389861600964 44.1839716117094, 142.389676669598 44.184525226451)) ^^http://www.opengis.net/ont/geosparql#wktLiteral