Complex sentence: Tuptim is the narrator, and she tells her audience of the evil King Simon of Legree, and his pursuit of the runaway slave Eliza, who runs away to gain her freedom, and is pursued by King Simon and his dogs.
Split into simpler sentences: Tuptim is the narrator, and she tells her audience of the evil of King Simon of Legree. They hear of the slave Eliza, who runs away to gain her freedom, and is pursued by King Simon and his dogs.