メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.716374325058 40.8259482018469, 140.715107247791 40.826003931493, 140.714639894252 40.8258793520971, 140.714903139457 40.825621542595, 140.715025650589 40.8255218263757, 140.715198084329 40.8253636939477, 140.715370595447 40.8251746010537, 140.71588436655 40.8254349453663, 140.716246410002 40.8256624208102, 140.716287092323 40.8257244464795, 140.716361941251 40.8258857809188, 140.716374325058 40.8259482018469)) ^^http://www.opengis.net/ont/geosparql#wktLiteral