メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.230664532629 35.5033249957642, 134.230300370844 35.5030268778655, 134.22998871352 35.5027615492757, 134.229977474416 35.5027537229003, 134.230948231305 35.5019299964048, 134.231332144854 35.5022266857456, 134.231692086137 35.5025171207679, 134.230664532629 35.5033249957642)) ^^http://www.opengis.net/ont/geosparql#wktLiteral