メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.257108562144 36.7026131651188, 137.257766385401 36.7026606822085, 137.259112928273 36.7027439967457, 137.259083238057 36.7055494247273, 137.259083661551 36.7059003981165, 137.259084915173 36.7069393099401, 137.25774942261 36.706933011513, 137.256205302793 36.7069268524066, 137.256233916003 36.7055429990395, 137.25623573502 36.7051465405085, 137.256243666833 36.7045164704056, 137.256247126645 36.7037760048983, 137.256250123225 36.7026380291566, 137.256411765645 36.7026030570536, 137.25709027492 36.7026118415539, 137.257108562144 36.7026131651188)) ^^http://www.opengis.net/ont/geosparql#wktLiteral