メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.287424117847 40.2597105146515, 141.285916206645 40.2598882587203, 141.285795747108 40.2596668778637, 141.284959361494 40.2581346818629, 141.286013239421 40.2578172519048, 141.286056407803 40.2579762240547, 141.286148997497 40.258177659773, 141.286267316226 40.2583464364569, 141.286507472224 40.2585917847278, 141.286817570617 40.2589059922128, 141.287062249479 40.2592021755435, 141.287258830831 40.2594477088342, 141.287424117847 40.2597105146515)) ^^http://www.opengis.net/ont/geosparql#wktLiteral