メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.905039363748 35.5316136501876, 136.902534234873 35.5317597599299, 136.902477834994 35.5338511575522, 136.900635415799 35.5338292208124, 136.900636064799 35.5336309893471, 136.900736985933 35.5319091527078, 136.900791775845 35.5299217337444, 136.901909788319 35.5299177152449, 136.902241281921 35.5299077388502, 136.903286632266 35.5297491890381, 136.905076574063 35.5295735514785, 136.905039363748 35.5316136501876)) ^^http://www.opengis.net/ont/geosparql#wktLiteral