メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.345405960882 43.7960837073198, 142.346001400285 43.7965140283894, 142.346021686087 43.7965287002825, 142.345922209978 43.7965998062464, 142.345678404295 43.7967874890525, 142.345416928113 43.79696666016, 142.344943936906 43.7973015231836, 142.343346632249 43.7961556537473, 142.343829881079 43.7958005361745, 142.34433957836 43.79542837664, 142.344392147041 43.7953887782228, 142.344627891238 43.7955663001728, 142.344727026772 43.7954968356099, 142.344942217767 43.7956352739392, 142.344836654828 43.7957235033939, 142.345080901247 43.7959074262828, 142.345184843498 43.7958348969071, 142.345468506918 43.7960372015267, 142.345405960882 43.7960837073198)) ^^http://www.opengis.net/ont/geosparql#wktLiteral