Complex sentence: Ernst Wilhelm Leberecht Tempel (December 4 1821--March 16 1889) was a German astronomer who worked in Marseille until the outbreak of the Franco-Prussian War in 1870, then later moved to Italy.
Split into simpler sentences: Ernst Wilhelm Leberecht Tempel (December 4 1821--March 16 1889) was a German astronomer. He worked in Marseille until the outbreak of the Franco-Prussian War in 1870, then moved to Italy.