メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.309816398382 42.28725433374, 143.310390160671 42.2875071763216, 143.309700864119 42.2884321542249, 143.309656030788 42.2884815232682, 143.309072871451 42.2882335472159, 143.308982992267 42.2881952688453, 143.30726046143 42.2874624700732, 143.307300616925 42.2874108941298, 143.307408750111 42.287272035543, 143.308017467504 42.2864898946293, 143.309816398382 42.28725433374)) ^^http://www.opengis.net/ont/geosparql#wktLiteral