Complex sentence: Elin Kleopatra Danielson-Gambogi (3 September 1861--31 December 1919) was a Finnish painter, best known for her realist works and portraits.
Split into simpler sentences: Elin Kleopatra Danielson-Gambogi (3 September 1861--31 December 1919) was a Finnish painter. She is best known for her realist works and portraits.