メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.403182288837 43.8155914332115, 142.403261367935 43.8156173280737, 142.404000753691 43.8161792822275, 142.402853772362 43.817012931629, 142.402402122934 43.8173333547373, 142.401975570161 43.8176433535207, 142.401534673217 43.8179611745573, 142.40089514473 43.8174934967662, 142.400480533778 43.8171902948651, 142.400403623311 43.8171344919798, 142.399836566169 43.8167230905099, 142.400760687743 43.8160309878081, 142.401235670626 43.8156782452882, 142.401435213678 43.8155638675488, 142.401800804956 43.8152919956984, 142.402299945742 43.8149438222478, 142.403182288837 43.8155914332115)) ^^http://www.opengis.net/ont/geosparql#wktLiteral