メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.870377965424 43.3372603927424, 141.870452894333 43.3374941272726, 141.870538379943 43.3377583483173, 141.868176091553 43.3381232446639, 141.867204111094 43.3382705045312, 141.867112476623 43.3379590719821, 141.867031011629 43.337685650395, 141.86699589711 43.337480600497, 141.867020485168 43.3372929092249, 141.867099688839 43.3370958357096, 141.867220444104 43.336902698582, 141.867444991558 43.3366518173562, 141.870050195191 43.3362352724635, 141.87014500784 43.3365251240572, 141.870295966509 43.3370091936335, 141.870377965424 43.3372603927424)) ^^http://www.opengis.net/ont/geosparql#wktLiteral