Question: Are both Protected and Night Mail documentaries?

Related documents: [0]  [DOC] Protected is a 1975 documentary film, narrated by Don Brady and Sydney born producer Robert Hughes. The film was directed by Alessandro Cavadini. It was an exposé of the ill-treatment of Aboriginal workers by white men. The details of what life was like for Aboriginal Australians on Palm Island became more widely known when Alessandro Cavadini and Carolyn Strachan recreated the strike in 1957 by hundreds of the Island’s residents even though there was huge resistance from local authorities. [END] 
[1]  [DOC] Night Mail is a 1936 documentary film about a London, Midland and Scottish Railway (LMS) mail train from London to Scotland, produced by the GPO Film Unit. The film ends with a "verse commentary" by W. H. Auden, written for existing footage. Benjamin Britten scored the film. The film was directed by Harry Watt and Basil Wright, and narrated by John Grierson and Stuart Legg. The Brazilian filmmaker Alberto Cavalcanti was sound director. The locomotive featured in the film was Royal Scot 6115 "Scots Guardsman", built in 1927. The film has become a classic of its own kind, much imitated by adverts and modern film shorts. "Night Mail" is widely considered a masterpiece of the British Documentary Film Movement. [END]  
Answer: yes
yes