メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.570329966469 42.9700434432003, 141.570350658638 42.970530402557, 141.570333204371 42.9710329601254, 141.5702426237 42.9716923461509, 141.570188377835 42.97202638142, 141.570113757758 42.9723145100755, 141.570038262031 42.9724167468909, 141.569897315903 42.972783041745, 141.569722928987 42.9732983825291, 141.569008260602 42.9732353388434, 141.568898781247 42.9734442771439, 141.568764223787 42.9736994847189, 141.568096796387 42.973564626281, 141.568308300433 42.9731240610896, 141.568473268925 42.9728035564032, 141.568644656423 42.9724914583176, 141.568735940632 42.9723084354581, 141.569205806856 42.9712623004518, 141.569329181224 42.9708653070685, 141.56941894512 42.9700113086519, 141.569489593864 42.9692709229321, 141.56992462163 42.9694941376606, 141.570446982033 42.9696535136857, 141.570329966469 42.9700434432003)) ^^http://www.opengis.net/ont/geosparql#wktLiteral