メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.973047691712 43.5480237520933, 144.973409909869 43.5481924605892, 144.973156494353 43.5486187254006, 144.973074064215 43.5485787802094, 144.972518890733 43.5490325234961, 144.971693060152 43.5484832569901, 144.972168896849 43.548109672742, 144.972537557251 43.5477992205943, 144.97260758756 43.5478300730144, 144.972632247894 43.5478409477095, 144.973047691712 43.5480237520933)) ^^http://www.opengis.net/ont/geosparql#wktLiteral