メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.362168918648 43.823333477688, 142.362182597331 43.8233244462291, 142.363335663695 43.824019685352, 142.362704247548 43.8244710249423, 142.362138464981 43.8249134720359, 142.360878011097 43.8258143578635, 142.360442139044 43.8254996267148, 142.359820074865 43.8250650316331, 142.358433550686 43.8258269834147, 142.358164682015 43.8255781554313, 142.358300610382 43.8254794905537, 142.358421425185 43.8253835831604, 142.359684500078 43.8244609929175, 142.360367717988 43.8239625592575, 142.361702348901 43.823010149661, 142.362168918648 43.823333477688)) ^^http://www.opengis.net/ont/geosparql#wktLiteral