メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.26894267301 44.0236212826924, 144.268601194217 44.0236437977161, 144.268241458941 44.0236336925976, 144.267835504213 44.0236170415403, 144.267566094039 44.0235923574436, 144.267291980122 44.0235553548792, 144.267057259246 44.0235362574512, 144.266866849843 44.0234962200691, 144.267425132602 44.0226663565771, 144.268305174031 44.0227550073482, 144.268331980192 44.0226720155687, 144.269115453673 44.0227406665896, 144.26894267301 44.0236212826924)) ^^http://www.opengis.net/ont/geosparql#wktLiteral