メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.355287973706 44.3565285097244, 143.355261669575 44.3565368860988, 143.354799692963 44.3566839538843, 143.354415402416 44.3568397941769, 143.353802006483 44.3571434690584, 143.353651865198 44.3565224690312, 143.353484428177 44.3560657467153, 143.354636786623 44.3556342675217, 143.354564959984 44.3555305118549, 143.35515259474 44.3553170838152, 143.355162369982 44.3553314020671, 143.355392358432 44.3556690382396, 143.355847171149 44.3563505098612, 143.355823303386 44.3563580887545, 143.355287973706 44.3565285097244)) ^^http://www.opengis.net/ont/geosparql#wktLiteral