メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.326886290003 43.1324946634905, 141.326970302109 43.1328849677693, 141.327072190418 43.1332806902236, 141.327167590264 43.1336801571582, 141.327260936566 43.1340822106444, 141.325926495483 43.1342498800202, 141.325645367028 43.1342852385273, 141.325117938165 43.1343515221617, 141.324615907538 43.1344145626726, 141.32452141516 43.1340196694496, 141.32441964307 43.133610790554, 141.324325130812 43.1332045734306, 141.324231947301 43.1328312808244, 141.323941194206 43.1316971030834, 141.324425839904 43.1316392033565, 141.325279116735 43.1315372308225, 141.325297202749 43.1315350561885, 141.32636518903 43.1314073811531, 141.326626207127 43.1313739712446, 141.326886290003 43.1324946634905)) ^^http://www.opengis.net/ont/geosparql#wktLiteral