Complex sentence: Like many films from the silent era, "The Carpet from Bagdad" was believed completely lost, but in 1982, an Oceaneering International diving expedition salvaged a number of artifacts from the wreck of the RMS "Lusitania", including one reel of film.
Split into simpler sentences: Like many films from the silent era, "The Carpet from Bagdad" was believed completely lost. However, in 1982, an Oceaneering International diving expedition salvaged a number of artifacts from the wreck of the RMS "Lusitania", including one reel of film.