メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.214055014695 37.2910260274969, 140.212992950305 37.2909408918802, 140.212201873035 37.2908627605889, 140.212262671834 37.290234051051, 140.212295751013 37.2898918113254, 140.213779389519 37.2897099080483, 140.214055014695 37.2910260274969)) ^^http://www.opengis.net/ont/geosparql#wktLiteral