メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.40218761567 43.7437038357035, 142.402190910854 43.7437453381717, 142.402247790754 43.7442427508167, 142.401132951848 43.7443092790711, 142.400270546603 43.7443484292538, 142.398204984193 43.7444552407784, 142.398100598667 43.7435189045575, 142.39868909265 43.7434801235042, 142.399404342732 43.7429443033794, 142.39953254938 43.7428537224219, 142.400531925337 43.7428291854259, 142.400473729556 43.7428588306987, 142.399708176844 43.7433761045293, 142.400946888287 43.7433145282933, 142.402152591131 43.7432613333395, 142.40218761567 43.7437038357035)) ^^http://www.opengis.net/ont/geosparql#wktLiteral