メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.76347848378 42.8960563398119, 140.763588909972 42.8971513703077, 140.763613050597 42.8971499963399, 140.763700877424 42.8983777303623, 140.763146531345 42.8984042779805, 140.761968274662 42.8984580769865, 140.761531485257 42.8984852328662, 140.761407325846 42.8972625116594, 140.761330538418 42.8965248533201, 140.761277512977 42.8959846465377, 140.761778320748 42.895955862463, 140.761776712353 42.8959391724891, 140.762503096311 42.8959140265364, 140.763469784616 42.8958886251432, 140.76347848378 42.8960563398119)) ^^http://www.opengis.net/ont/geosparql#wktLiteral