メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.157436725262 34.6732381979365, 135.157249717881 34.6734299019271, 135.156941903255 34.6737497573925, 135.156183414381 34.6731869544352, 135.156477768746 34.6728852215179, 135.157004450585 34.6723542917881, 135.157224233023 34.6725105634817, 135.157762781747 34.6729013148525, 135.157436725262 34.6732381979365)) ^^http://www.opengis.net/ont/geosparql#wktLiteral