メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.760666107606 35.3864704287271, 136.759352209298 35.3865896855452, 136.759264507108 35.3865965752308, 136.759935398786 35.3849240728851, 136.760212111355 35.3849242275431, 136.763391414861 35.3846444397386, 136.763545403031 35.3858034195637, 136.763604707117 35.3862145378296, 136.760666107606 35.3864704287271)) ^^http://www.opengis.net/ont/geosparql#wktLiteral