メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.346981852434 43.8145343548404, 142.347431198639 43.8147885571878, 142.348606039481 43.8154612387075, 142.348071211923 43.8158651088469, 142.347555276994 43.816247423362, 142.347047424809 43.8166199371457, 142.346436923444 43.8170708714814, 142.345386281805 43.8162688174636, 142.345240061915 43.8161514315227, 142.344557713845 43.8156310719062, 142.343962029215 43.815177231678, 142.344675430019 43.8148163059946, 142.346261796693 43.8141197806597, 142.346981852434 43.8145343548404)) ^^http://www.opengis.net/ont/geosparql#wktLiteral