メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.48831426581 35.0123070839445, 138.488245590285 35.0128721828582, 138.488119849451 35.0139309684386, 138.487562393309 35.0138697921348, 138.486379838014 35.0137250285447, 138.486291033588 35.0132161866579, 138.486284365304 35.0126256574917, 138.486282430392 35.0125970638018, 138.486309498752 35.012503258363, 138.486405189232 35.0122592378757, 138.486651631638 35.0117513434921, 138.487198964723 35.0108568302287, 138.487971456968 35.0110073987892, 138.488392685821 35.0110218003981, 138.488343326884 35.0116934578789, 138.488295944188 35.0120694623296, 138.48831426581 35.0123070839445)) ^^http://www.opengis.net/ont/geosparql#wktLiteral