メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.600816540486 34.5955123569719, 135.600206399411 34.5954810608818, 135.599622807758 34.5954550605348, 135.598869671124 34.5954138515668, 135.597548074464 34.5953530152332, 135.597711814965 34.5930180402877, 135.598760101927 34.5927707528519, 135.600104305885 34.5924325829091, 135.600730037667 34.5925649300721, 135.600816540486 34.5955123569719)) ^^http://www.opengis.net/ont/geosparql#wktLiteral