メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.817305039344 33.5306958477428, 135.816198610508 33.531714241261, 135.814519572666 33.5305488527746, 135.81471580678 33.5302893489389, 135.81500891194 33.5299017817586, 135.815130820617 33.5297565672306, 135.817305039344 33.5306958477428)) ^^http://www.opengis.net/ont/geosparql#wktLiteral