Complex sentence: Adelbert von Chamisso (30 January 1781--21 August 1838) was a German poet and botanist, author of "Peter Schlemihl", a famous story about a man who sold his shadow.
Split into simpler sentences: Adelbert von Chamisso (30 January 1781--21 August 1838) was a German poet and botanist. He wrote "Peter Schlemihl", a famous story about a man who sold his shadow.