メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.413031234749 43.068355606395, 141.412886660878 43.0688293471075, 141.412867040502 43.0688261086705, 141.412735685717 43.0692796896362, 141.412603073682 43.0697545701494, 141.412446169873 43.0702521274972, 141.411733742188 43.0701433180437, 141.41104879128 43.0700177561849, 141.411194543029 43.0695227898607, 141.41135018613 43.0690549028736, 141.411348135019 43.0690364611821, 141.41148772537 43.0685915212464, 141.411631571485 43.0681297339406, 141.413031234749 43.068355606395)) ^^http://www.opengis.net/ont/geosparql#wktLiteral