メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.991059937001 34.8740279085575, 136.99054480312 34.8742571808324, 136.98962186004 34.8746805212797, 136.989412513219 34.874564709317, 136.989209252189 34.874506165591, 136.989011546068 34.8744624188043, 136.988686231062 34.8743591829153, 136.988237841055 34.8741061008913, 136.987999458404 34.8739489016922, 136.98874992043 34.8735713102522, 136.98882317963 34.8735345829586, 136.990375574141 34.8727688253331, 136.991059937001 34.8740279085575)) ^^http://www.opengis.net/ont/geosparql#wktLiteral