メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.300292696036 37.9824196656804, 139.300651903362 37.9816189928392, 139.301023218488 37.980746297809, 139.301239551274 37.9802770106868, 139.3017524922 37.9795908709413, 139.302272809831 37.9795756388929, 139.301711795812 37.9785789338386, 139.303020240013 37.9781870908792, 139.304444265341 37.9809849493764, 139.302147934063 37.9817656302334, 139.300292696036 37.9824196656804)) ^^http://www.opengis.net/ont/geosparql#wktLiteral