メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.667449515212 32.5815093799975, 131.668231568133 32.5816036669921, 131.668159410251 32.5820405242648, 131.668155616878 32.582084649547, 131.668137770544 32.5822929058478, 131.668176359734 32.5823628408827, 131.667627167852 32.582289197601, 131.667392873878 32.5822671869159, 131.666459459629 32.5822086397191, 131.666483675399 32.5818086392971, 131.666503709086 32.5818115275692, 131.666537693562 32.5812525268184, 131.667470968998 32.5814004121581, 131.667449515212 32.5815093799975)) ^^http://www.opengis.net/ont/geosparql#wktLiteral