メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.138410321565 42.705682186991, 143.137643012167 42.7058294979587, 143.137046556802 42.7059809680917, 143.136742676416 42.7055559714776, 143.137322067469 42.7053316287312, 143.13725551454 42.7052454927857, 143.137755561147 42.7050683225556, 143.137827503525 42.7050774724532, 143.137940633942 42.7050327087899, 143.138410321565 42.705682186991)) ^^http://www.opengis.net/ont/geosparql#wktLiteral