メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.158600326712 35.0683807315323, 137.158592350474 35.0683960834478, 137.158395415959 35.0688558771691, 137.158355494548 35.0688512944183, 137.156932258602 35.0686885212337, 137.15703190377 35.0682411131865, 137.157041885559 35.0681963235211, 137.156186147492 35.0680900161484, 137.156568481701 35.0659127552391, 137.157393413608 35.0660041265228, 137.157581149596 35.0660821803126, 137.157708512052 35.0661203653199, 137.157917913067 35.066111655507, 137.158383041592 35.0660545205904, 137.158535506443 35.0660656654332, 137.158769728328 35.0660577320546, 137.158748423916 35.0673628724927, 137.158681090329 35.0680777649623, 137.158600326712 35.0683807315323)) ^^http://www.opengis.net/ont/geosparql#wktLiteral