メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.773804191655 35.6998064679144, 139.773393003474 35.6998640432491, 139.773080750061 35.6998782171933, 139.773010466029 35.6995446049943, 139.77299072253 35.699450902246, 139.772931796041 35.6992050376628, 139.774224845227 35.6991647672943, 139.77425151518 35.6994149815061, 139.774283778937 35.6997176941686, 139.774286051766 35.6997389973359, 139.773804191655 35.6998064679144)) ^^http://www.opengis.net/ont/geosparql#wktLiteral