メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.310590274909 42.9350826241649, 143.308366612944 42.9342016978956, 143.306223789883 42.9333210324123, 143.306345340161 42.9325254631891, 143.306528848235 42.9307017284468, 143.306534175713 42.9306213629918, 143.306544365449 42.930467245824, 143.30665844329 42.9296829974774, 143.306674493954 42.929322969766, 143.307187202776 42.9249863173493, 143.307578290549 42.9250116836521, 143.308956220968 42.9250966441203, 143.309191551369 42.9251245697302, 143.310005470149 42.9253355553716, 143.311367930805 42.9254892683479, 143.310590274909 42.9350826241649)) ^^http://www.opengis.net/ont/geosparql#wktLiteral