メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.366897935105 43.1051284511715, 141.36692552532 43.105132109607, 141.367457803314 43.1052016122935, 141.367447263615 43.1052403508183, 141.367361530734 43.1055551710905, 141.367300664069 43.1057761568097, 141.366774765214 43.1056966459645, 141.36680950405 43.1055104810388, 141.366555645925 43.105476033822, 141.36518653789 43.1052904315855, 141.36530340715 43.1048539795094, 141.365968081367 43.1049471557645, 141.366185588567 43.1049929271468, 141.366342267836 43.1050503255554, 141.366897935105 43.1051284511715)) ^^http://www.opengis.net/ont/geosparql#wktLiteral