メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.769241023735 42.9081673071896, 140.766981597837 42.9082971047368, 140.766730233726 42.9055683964298, 140.766717804623 42.9055600763247, 140.766715623243 42.9055393004014, 140.767210508576 42.9055292653636, 140.767471859578 42.9055346959415, 140.767676429409 42.9055580259935, 140.767865282617 42.9055904368045, 140.767874241396 42.905571915546, 140.768389027827 42.9056736772163, 140.768586692167 42.9056937517509, 140.769013998713 42.905689020998, 140.769241023735 42.9081673071896)) ^^http://www.opengis.net/ont/geosparql#wktLiteral