メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.671894391756 32.5711867234996, 131.670204634239 32.5713137845907, 131.670196171541 32.5709466132388, 131.67029929313 32.5709395836497, 131.670301177572 32.5706775124817, 131.6703290024 32.5700481226825, 131.670244878747 32.5700420866513, 131.670247866949 32.5699288130917, 131.670163769837 32.5699260541148, 131.670172899715 32.5695581908908, 131.670491569893 32.5695635813713, 131.670804910539 32.5695683644446, 131.672396371514 32.5695874187904, 131.672114757309 32.5705093510096, 131.671894391756 32.5711867234996)) ^^http://www.opengis.net/ont/geosparql#wktLiteral