Complex sentence: Bernardo Joaquim da Silva Guimarães (August 15,1825--March 10,1884) was a Brazilian poet and novelist, author of the famous romances "A Escrava Isaura" and "O Seminarista".
Split into simpler sentences: Bernardo Joaquim da Silva Guimarães (August 15,1825--March 10,1884) was a Brazilian poet and novelist. He is the author of the famous romances "A Escrava Isaura" and "O Seminarista".