Complex sentence: Suffering from depression, Gary died of a self-inflicted gunshot wound on 2 December 1980 in Paris, France though he left a note which said specifically that his death had no relation to Seberg's suicide.
Split into simpler sentences: Suffering from depression, Gary died of a self-inflicted gunshot wound on 2 December 1980 in Paris, France. He left a note which said specifically that his death had no relation to Seberg's suicide.