メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.383520224658 43.8155618159337, 142.384310362478 43.8161484718595, 142.383793409963 43.8165240315218, 142.383277966326 43.8168727378904, 142.382825416736 43.8172155131216, 142.382338595047 43.8175657452223, 142.381843815171 43.8179425296181, 142.381049980926 43.8173427565432, 142.380864848823 43.8172223105602, 142.380203734305 43.8167432304632, 142.380437704534 43.8165789416544, 142.380692446692 43.8163825801788, 142.381182518886 43.8160530262083, 142.381655617576 43.8157036938373, 142.38214302437 43.8153496327729, 142.382648622257 43.8149842423001, 142.383520224658 43.8155618159337)) ^^http://www.opengis.net/ont/geosparql#wktLiteral