メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.352518127858 43.1379207891763, 141.352730627304 43.1385606092175, 141.352187886059 43.1386757772198, 141.351701348374 43.1387694415443, 141.350678660244 43.1389736739023, 141.350568209062 43.1385478144668, 141.350528301017 43.1383939760211, 141.350442709443 43.1380544632336, 141.350337601188 43.137637859002, 141.350436608571 43.1376117712122, 141.351229728084 43.1374027869223, 141.351746264209 43.1373124543902, 141.352296713451 43.137253892928, 141.35239477331 43.1375491942611, 141.352518127858 43.1379207891763)) ^^http://www.opengis.net/ont/geosparql#wktLiteral