メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.887923051788 43.8075665139957, 143.888458185564 43.8076061452798, 143.888341336162 43.8086304982736, 143.888508735044 43.8087935766742, 143.888977015269 43.8092922440947, 143.887401890059 43.8100832397739, 143.88685685694 43.8100516391449, 143.886920299496 43.8094170615817, 143.887009976844 43.8087192247218, 143.887034181904 43.8085390357758, 143.887034320007 43.8085369950879, 143.88710672535 43.8080812513625, 143.887180171153 43.8075214905953, 143.887625338568 43.8075449942592, 143.887923051788 43.8075665139957)) ^^http://www.opengis.net/ont/geosparql#wktLiteral