メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.907209608523 43.1028536805908, 142.908111432498 43.1030097686244, 142.909837717351 43.1032625189331, 142.909491173409 43.1044999312941, 142.909444768332 43.104665684762, 142.909388749565 43.104865674135, 142.906864936707 43.1044098797836, 142.906721980755 43.1043840449198, 142.906732003183 43.1043518467671, 142.906030025359 43.1042475615077, 142.906080737235 43.1040845979198, 142.906129642196 43.103927552822, 142.906355048279 43.1032038317588, 142.90651241531 43.1027329841518, 142.907209608523 43.1028536805908)) ^^http://www.opengis.net/ont/geosparql#wktLiteral