メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.549534935803 43.2384740597789, 143.548096602746 43.2385352975376, 143.548092157456 43.2384799984794, 143.547995638134 43.2369299159406, 143.549212406751 43.2368776719867, 143.549749623956 43.2368546061554, 143.549838999927 43.2368507751318, 143.549884939905 43.2375903258577, 143.549885140647 43.2375952468409, 143.549921560684 43.2383937717739, 143.549927653256 43.2384584754618, 143.549534935803 43.2384740597789)) ^^http://www.opengis.net/ont/geosparql#wktLiteral