メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.574579717252 35.3754270597916, 136.5718444949 35.3752717724266, 136.572033893062 35.3742651841137, 136.573174395037 35.3744050960245, 136.573292052064 35.3744172940181, 136.573993396954 35.3743844764076, 136.574589585471 35.3743466305283, 136.575330201168 35.3742399148002, 136.575039403213 35.3746495386216, 136.574851032713 35.3749251597865, 136.574727835297 35.3751240591418, 136.574579717252 35.3754270597916)) ^^http://www.opengis.net/ont/geosparql#wktLiteral