Complex sentence: Gaius Calpurnius Piso, Roman statesman, orator and patron of literature in the 1st century AD, is known chiefly for his share in the conspiracy of AD 65 against Nero.
Split into simpler sentences: Gaius Calpurnius Piso was a Roman statesman, orator and patron of literature in the 1st century AD. He is known chiefly for his share in the conspiracy of AD 65 against Nero.