(setq dc-ns (nnrss-get-namespace-prefix xml "http://purl.org/dc/elements/1.1/")
rdf-ns (nnrss-get-namespace-prefix xml "http://www.w3.org/1999/02/22-rdf-syntax-ns#")
rss-ns (nnrss-get-namespace-prefix xml "http://purl.org/rss/1.0/")
(setq dc-ns (nnrss-get-namespace-prefix xml "http://purl.org/dc/elements/1.1/")
rdf-ns (nnrss-get-namespace-prefix xml "http://www.w3.org/1999/02/22-rdf-syntax-ns#")
rss-ns (nnrss-get-namespace-prefix xml "http://purl.org/rss/1.0/")