メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.626603871695 34.9117093383405, 136.626264317309 34.9121051463867, 136.623341379293 34.9115743776434, 136.623359337045 34.9110351385994, 136.62348153458 34.9110328929104, 136.626603871695 34.9117093383405)) ^^http://www.opengis.net/ont/geosparql#wktLiteral