メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.866402996383 43.3280120858065, 141.866485501419 43.3282649093522, 141.866613257727 43.3286747848473, 141.865438750813 43.3288519489679, 141.865095867166 43.3289043187175, 141.864941218138 43.3289315097252, 141.863934963965 43.3290842560678, 141.863722636618 43.3284405326269, 141.863642786114 43.3281358140223, 141.864692703308 43.3279730898814, 141.865260270502 43.3278851151853, 141.866320363098 43.3277224805729, 141.866402996383 43.3280120858065)) ^^http://www.opengis.net/ont/geosparql#wktLiteral