メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.444005743822 43.8111591270191, 142.444526219133 43.8114844227701, 142.445042635928 43.8118097420316, 142.445574707954 43.8121435228826, 142.444578025563 43.8129847429746, 142.444046283898 43.8126591667634, 142.443518071144 43.8123313670131, 142.442993888128 43.8120086391403, 142.442636164345 43.8118034687648, 142.442419900722 43.8116844454906, 142.442809570454 43.811362021005, 142.443188326955 43.8110486136698, 142.443466215794 43.8108186711036, 142.444005743822 43.8111591270191)) ^^http://www.opengis.net/ont/geosparql#wktLiteral