メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.594056741933 40.6522623929735, 140.595024233603 40.6528519455843, 140.59484320712 40.6530227533016, 140.594047054895 40.6537841405149, 140.593867801914 40.6539485494096, 140.593131719205 40.6546525034746, 140.592092496454 40.6556422539621, 140.590434989282 40.6541450903255, 140.591916571046 40.652734622624, 140.59251928854 40.6521677385921, 140.592741774604 40.6519584654695, 140.593077191604 40.6516526142372, 140.594013277587 40.6522359179964, 140.594056741933 40.6522623929735)) ^^http://www.opengis.net/ont/geosparql#wktLiteral