メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.745130539796 43.1607556577006, 141.744647426468 43.1607705421252, 141.744567161544 43.1600934637432, 141.744489933142 43.1595145105513, 141.744419184613 43.1588779871632, 141.744406126193 43.1587605479159, 141.744641585674 43.1587488580298, 141.744657501859 43.1588693346685, 141.745468068821 43.158839933744, 141.74563042501 43.1600207301907, 141.745636136423 43.1604831806934, 141.745619674396 43.1605574465254, 141.745565074235 43.1606316141599, 141.745488636707 43.1606684111854, 141.745383647337 43.1606958708526, 141.745204071056 43.1607218026281, 141.745130539796 43.1607556577006)) ^^http://www.opengis.net/ont/geosparql#wktLiteral