メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.967229538524 34.6861848378275, 137.963722682995 34.6866219193807, 137.963723016214 34.6870985816094, 137.963772722722 34.6872838867364, 137.96310203145 34.6872060030354, 137.962946822587 34.6871972917378, 137.962302715686 34.6872606589931, 137.961719765891 34.6872875290054, 137.961579203795 34.6864924752812, 137.961818138164 34.6864816967224, 137.961754207444 34.6858416421967, 137.963552542683 34.6855006528074, 137.967158270929 34.6848287725551, 137.967203661417 34.6849964500874, 137.967311568494 34.6855862691451, 137.967323337666 34.6856852029872, 137.967256254763 34.6858350640987, 137.967229538524 34.6861848378275)) ^^http://www.opengis.net/ont/geosparql#wktLiteral