メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.94037119863 42.9457238190808, 142.940333210094 42.9456911334563, 142.940145436029 42.9455295888694, 142.939463187555 42.9449009266455, 142.939276899627 42.9447348703856, 142.93929948161 42.9447210905572, 142.939561823839 42.9445610560716, 142.940447606178 42.9440356952929, 142.940868244664 42.9444192073217, 142.94117128091 42.9446705016274, 142.941707021895 42.9451754107876, 142.941160318029 42.945512007785, 142.94098196739 42.9453626455884, 142.940396833912 42.9457088953446, 142.94037119863 42.9457238190808)) ^^http://www.opengis.net/ont/geosparql#wktLiteral