メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.354951418209 43.0515205946793, 141.355929921771 43.0516629284494, 141.355774216715 43.05233399478, 141.355618291318 43.0529075812842, 141.354079902929 43.0527055129371, 141.354229258818 43.0521295555341, 141.354390382558 43.0515354748935, 141.354420855163 43.0513590448287, 141.354664637799 43.0513981574069, 141.354653677182 43.0514726208343, 141.354644244946 43.0515210752963, 141.354708421976 43.0515262893267, 141.354741912668 43.0515314045181, 141.354755762566 43.0514890332123, 141.354951418209 43.0515205946793)) ^^http://www.opengis.net/ont/geosparql#wktLiteral