メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.957865598925 43.261886066379, 141.957136348016 43.2620204753134, 141.956430410867 43.2621592280991, 141.955564043436 43.2623251973052, 141.955534648143 43.2622638655495, 141.95520259228 43.2623413442897, 141.955082133209 43.2619320716437, 141.956278112477 43.2617051438598, 141.956983986244 43.2615791899147, 141.958611778643 43.2612468754989, 141.959148532177 43.2611417010028, 141.959120876248 43.2614462258191, 141.95913510626 43.2615208104309, 141.959175428279 43.2616231719415, 141.958626921461 43.2617452659211, 141.957865598925 43.261886066379)) ^^http://www.opengis.net/ont/geosparql#wktLiteral