メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.413694875532 43.7930068174966, 142.414179937432 43.7933128211637, 142.414737854007 43.7936560765013, 142.415222979391 43.793977388254, 142.415810780987 43.7943413381865, 142.414836011072 43.7951357644804, 142.414283186012 43.7947818338184, 142.413776975588 43.7944797139354, 142.413429740411 43.7942597830463, 142.41323752842 43.7941230159693, 142.413014884841 43.7939834087107, 142.412831993369 43.793868653657, 142.412731272412 43.7938055413553, 142.412265045706 43.7935036897182, 142.412835421776 43.7930128310563, 142.413218797807 43.7926917626592, 142.413694875532 43.7930068174966)) ^^http://www.opengis.net/ont/geosparql#wktLiteral