メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.304577918987 43.1102920628743, 141.304892478383 43.1105915136361, 141.303823477723 43.1111741512163, 141.30380915098 43.1111819798973, 141.303321506834 43.1114501931312, 141.303288572327 43.1114757316467, 141.302661915201 43.1118318292056, 141.301955276202 43.1111566684798, 141.301897887528 43.1110997904024, 141.301264326342 43.1104796646432, 141.301846804002 43.1101557274612, 141.30245067223 43.109819887313, 141.302593372851 43.1097351261349, 141.303501017989 43.1092323268891, 141.30377752573 43.1095274581472, 141.304191120326 43.1099091684071, 141.304577918987 43.1102920628743)) ^^http://www.opengis.net/ont/geosparql#wktLiteral