メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.289372143777 43.1383171344966, 141.290352324973 43.1390625270577, 141.289960825411 43.1393426712261, 141.28959840279 43.1395994981775, 141.289586456904 43.139607978803, 141.289157321 43.1399177646637, 141.288698295381 43.1402409412226, 141.288286094275 43.1405358847928, 141.287307951865 43.1397891569856, 141.286333140303 43.1390642519023, 141.285873358287 43.1387197164296, 141.286249763553 43.1384476182622, 141.286739079163 43.1380974181722, 141.287845990287 43.1373175619509, 141.287945038714 43.137247712938, 141.28839010849 43.1375812153939, 141.289372143777 43.1383171344966)) ^^http://www.opengis.net/ont/geosparql#wktLiteral