Complex sentence: Lucius Petrus Dextrus was a Roman soothsayer in The Fires of Pompeii, he breathed in dust from Mount Vesuvius, which was created by the Pyroviles, and gave him false predictions of a brighter future for Pompeii.
Split into simpler sentences: Lucius Petrus Dextrus was a Roman soothsayer in The Fires of Pompeii. He breathed in dust from Mount Vesuvius, which was created by the Pyroviles, and gave him false predictions of a brighter future for Pompeii.