メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.911207731326 43.5121425382911, 141.91132372999 43.512546202765, 141.911115274231 43.5126079643964, 141.911010782814 43.5126878268807, 141.910912127564 43.5128122922775, 141.910554064006 43.5133591764129, 141.910153933229 43.5132176531254, 141.909693318441 43.5130628300313, 141.909711277067 43.5130225510834, 141.909718319416 43.5128577272504, 141.909682559116 43.5126883462306, 141.90942879455 43.5118722617243, 141.910103404627 43.5117696597501, 141.91105880116 43.5116243204168, 141.911207731326 43.5121425382911)) ^^http://www.opengis.net/ont/geosparql#wktLiteral