メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.880093254227 35.2634476305889, 136.880341716043 35.2639520102798, 136.878873271891 35.264425739484, 136.878533158811 35.2639883220044, 136.8784954769 35.2639430224595, 136.878230439366 35.2636242302305, 136.87812101913 35.2634887615337, 136.877970828143 35.2632292535208, 136.877807141862 35.2629021080681, 136.877643778944 35.2624848226848, 136.879512244707 35.2618927592244, 136.880093254227 35.2634476305889)) ^^http://www.opengis.net/ont/geosparql#wktLiteral