メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.346736289532 43.761377019518, 142.34629973962 43.7617037891764, 142.345735811137 43.7621609168487, 142.345451282372 43.7620346503521, 142.345152915523 43.7619072354684, 142.344263852408 43.761617203594, 142.344591732688 43.7613197691957, 142.345156458788 43.760894730829, 142.345365066188 43.7607468797937, 142.345558415291 43.7606138105178, 142.346736289532 43.761377019518)) ^^http://www.opengis.net/ont/geosparql#wktLiteral