メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.358228759 43.7391572382357, 142.358953008011 43.7393763713527, 142.358260184395 43.7405459511257, 142.357611102042 43.7416897840608, 142.356927163064 43.741482701034, 142.356908603997 43.7414763547256, 142.356218410756 43.7412680786361, 142.356878296179 43.7401257534844, 142.357532216846 43.7389639356816, 142.358228759 43.7391572382357)) ^^http://www.opengis.net/ont/geosparql#wktLiteral