メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.714096856512 35.1708886430897, 136.713482342215 35.1708588156169, 136.713413395713 35.1705708830505, 136.713177619988 35.1695978235478, 136.713273405752 35.1696001529452, 136.713353817388 35.1695679893672, 136.713447581946 35.1695014383902, 136.71345759701 35.1693269693624, 136.714149158178 35.1693103966056, 136.714147613801 35.1695741214395, 136.71412662035 35.1702681234689, 136.714096856512 35.1708886430897)) ^^http://www.opengis.net/ont/geosparql#wktLiteral