Complex sentence: In 2012 MGM released yet another version, digitally restored and at three hours and thirty-six minutes--216 minutes, premiered at the 2012 Venice Film Festival as part of the Venice Classics series.
Split into simpler sentences: In 2012 MGM released yet another version, digitally restored and 216 minutes long. It premiered at the 2012 Venice Film Festival as part of the Venice Classics series.