メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.362636029256 43.1502249512279, 141.362842026733 43.1511314152558, 141.362346296778 43.1511975361291, 141.360825112932 43.1513949183277, 141.360816836587 43.1513959790802, 141.360228296534 43.151469877621, 141.360076799377 43.1507754567451, 141.360047073592 43.1506129047213, 141.359838388996 43.149782161312, 141.360432921695 43.1497045135016, 141.360935604325 43.1496417601435, 141.361435529026 43.1495770835755, 141.362002218843 43.1495049773292, 141.362436097489 43.1494507531425, 141.362539485339 43.149833658596, 141.362636029256 43.1502249512279)) ^^http://www.opengis.net/ont/geosparql#wktLiteral