メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.403100142654 43.1557210848788, 141.403262055354 43.1566149665243, 141.403349368419 43.1573043420331, 141.403409072867 43.1577392053338, 141.402964298292 43.1577769274348, 141.402554235632 43.1578117038556, 141.402086288814 43.157851387888, 141.401592318996 43.1578932768924, 141.401242293025 43.1579229576205, 141.400873260162 43.1579542488505, 141.399284501607 43.1580955472643, 141.398928299845 43.1559219958158, 141.398795600289 43.1551290384754, 141.400398437829 43.1550960142738, 141.401376225005 43.1550758433893, 141.402996069029 43.1550424155122, 141.403100142654 43.1557210848788)) ^^http://www.opengis.net/ont/geosparql#wktLiteral