メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.332935038913 43.7620141221907, 142.332940280418 43.7620055043092, 142.333696148258 43.7622360291691, 142.33330028903 43.7629529276984, 142.333067077617 43.7633345552591, 142.332299977786 43.763103630399, 142.331576357402 43.7628801932536, 142.332040505422 43.7620824526778, 142.332211583278 43.7617832879337, 142.332935038913 43.7620141221907)) ^^http://www.opengis.net/ont/geosparql#wktLiteral