メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.311482250703 43.1304050544285, 141.310901676588 43.1307206610594, 141.310875149532 43.1307348621057, 141.310502206871 43.1309350648423, 141.310467342755 43.1309544017547, 141.31010814656 43.1311535199303, 141.31005761874 43.1311798312389, 141.309658820523 43.1313876258083, 141.308609015258 43.1303413095561, 141.308341842335 43.1300749593504, 141.309147569308 43.1296166865725, 141.309168492494 43.1296047625868, 141.309540356066 43.1293932302122, 141.309553918461 43.1293854652143, 141.310136844399 43.129053848442, 141.3104729239 43.1293980479572, 141.311133369516 43.1300620873333, 141.31128803805 43.1302142089833, 141.311482250703 43.1304050544285)) ^^http://www.opengis.net/ont/geosparql#wktLiteral