Complex sentence: While he was there, Theo wrote that he could no longer support him financially; a few weeks later, on 27 July 1890, Van Gogh walked into a wheat field and shot himself in the chest with a revolver.
Split into simpler sentences: While he was there, Theo wrote that he could no longer support him financially. A few weeks later, on 27 July 1890, Van Gogh walked into a wheat field and shot himself in the chest with a revolver.