メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.589308438068 42.6284501472849, 141.590237677394 42.6288205482229, 141.590311219027 42.628855014091, 141.591415098291 42.6293151769594, 141.592528149292 42.629778757525, 141.592113576782 42.6303169764801, 141.591748377877 42.6307789523484, 141.590667720343 42.6303086569601, 141.58955909912 42.6298588693874, 141.588466751607 42.6294073370615, 141.588029645443 42.6292410687481, 141.588137370943 42.6291018639388, 141.588523802817 42.6288209273253, 141.589202822412 42.6283915810794, 141.589308438068 42.6284501472849)) ^^http://www.opengis.net/ont/geosparql#wktLiteral