メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.443344428937 43.0525411795491, 141.443481379381 43.0529545636126, 141.443644066278 43.0534642710265, 141.442113146964 43.0537229808089, 141.441953529801 43.0532250388168, 141.441813568516 43.0528080447337, 141.441624106406 43.0522170555651, 141.441660469775 43.0521938226696, 141.442067010485 43.051921770752, 141.442266060076 43.0517784356072, 141.442434840774 43.051665339541, 141.44262757474 43.0515354617167, 141.44275484817 43.0514171489933, 141.442903814677 43.0512754291257, 141.443206541416 43.0521007120654, 141.443344428937 43.0525411795491)) ^^http://www.opengis.net/ont/geosparql#wktLiteral