Conversation so far:
what was Federico fellini's first screenplay?
Knights of the Desert
what was Federico Fellini's first screenplay Knights of the Desert about?
The film was based on a novel by Emilio Salgari
What year did Federico Fellini make the screenplay for the film Knights of the desert?
in 1942
Did Federico Fellini work on the screenplay for the film Knights of the desert in 1942 by himself?
the screenplay was written by Federico Fellini and Vittorio Mussolini, the son of Italy's dictator Benito Mussolini.
Does Federico Fellini  have a screenplay that he is best know for?
Rome, Open City
Did the screenplay Rome, Open City written by federico Fellini  win any awards?
The film won several awards at various film festivals, including the most prestigious Cannes Grand Prix

Question: How many screen plays has he done?
Self-contained rewrite: How many screen plays has Federico Fellini done besides Rome, Open City?