メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.356927163064 43.741482701034, 142.357611102042 43.7416897840608, 142.357629406522 43.7416953221866, 142.357206824403 43.7424355043452, 142.356982537199 43.7428283554372, 142.356612443206 43.7434582583918, 142.356294921061 43.7439986432544, 142.355824724398 43.7438660714838, 142.355578342809 43.7437887189914, 142.355124194494 43.743646178401, 142.354891372102 43.7435772512169, 142.355557167455 43.7424093996154, 142.356218410756 43.7412680786361, 142.356908603997 43.7414763547256, 142.356927163064 43.741482701034)) ^^http://www.opengis.net/ont/geosparql#wktLiteral