メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.29108191587 35.2794670064945, 136.29079001759 35.279691361769, 136.29069182315 35.2799762411103, 136.29002551728 35.2795630383208, 136.290212883245 35.2792372430376, 136.290291558786 35.2790418466293, 136.290967001703 35.2792435493811, 136.29108191587 35.2794670064945)) ^^http://www.opengis.net/ont/geosparql#wktLiteral