メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.353154509186 44.3525641071747, 143.353107796765 44.3525709575972, 143.351391793448 44.3528296835075, 143.351061467976 44.3520775565164, 143.350802499617 44.3514880104329, 143.350792696029 44.351477311924, 143.350909595762 44.3514192298696, 143.350868317318 44.3510672849315, 143.352709254657 44.3510719869308, 143.352731698601 44.3510720509789, 143.35346640606 44.351073917118, 143.353873693534 44.3524584012583, 143.353846818703 44.3524623511448, 143.353154509186 44.3525641071747)) ^^http://www.opengis.net/ont/geosparql#wktLiteral