メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.192415406805 38.6882782826996, 141.191910329952 38.687551771466, 141.191757938596 38.6873402398209, 141.191707338577 38.6872597332212, 141.19176927968 38.6872375841093, 141.191381741211 38.6866683724148, 141.192783268452 38.6863234270468, 141.192999574863 38.6870147833602, 141.193219046484 38.6878131137364, 141.192415406805 38.6882782826996)) ^^http://www.opengis.net/ont/geosparql#wktLiteral