メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.405804318413 43.8137585712553, 142.406561462138 43.8142424816733, 142.406644205047 43.8142995730801, 142.406759384177 43.8144034368966, 142.404162658642 43.8162986779036, 142.404000753691 43.8161792822275, 142.403261367935 43.8156173280737, 142.403182288837 43.8155914332115, 142.402299945742 43.8149438222478, 142.402487192847 43.8148077116688, 142.403978313354 43.8137160337401, 142.405682956217 43.8133491897793, 142.405915261672 43.8136128031459, 142.405757460708 43.8136884200362, 142.405804318413 43.8137585712553)) ^^http://www.opengis.net/ont/geosparql#wktLiteral