メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.942565484202 33.6292257587476, 135.942213722292 33.6291314835507, 135.942935641447 33.6286308240509, 135.943956851616 33.6279823641929, 135.944153302312 33.6281932187953, 135.94322571382 33.6289217467805, 135.94287448933 33.6290878321827, 135.942565484202 33.6292257587476)) ^^http://www.opengis.net/ont/geosparql#wktLiteral