メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.35314889654 43.7839247506632, 142.353112073019 43.7839457933262, 142.352617953364 43.7843169488851, 142.352283098127 43.7840731286678, 142.352191567603 43.7840287327831, 142.351894774144 43.7838197219705, 142.352377641619 43.7834740902629, 142.353176705725 43.7828934107079, 142.353185744043 43.7828868809966, 142.353857165086 43.7833972092649, 142.35314889654 43.7839247506632)) ^^http://www.opengis.net/ont/geosparql#wktLiteral