Complex sentence: The former Pennsylvania Railroad also planned a railroad tunnel, for frieght use, between Brooklyn and Staten Island in 1893; however, the project was never started, despite efforts by government planners to start the project from the 1920s through the 1940s.
Split into simpler sentences: The former Pennsylvania Railroad (PRR) also planned a railroad tunnel, for freight use, between Brooklyn and Staten Island in 1893. The project was never started, despite efforts by government planners to start the project from the 1920s through the 1940s.