Complex sentence: Some of the paintings found in the ruins of Pompeii show a remarkable realism and perspective for their time; it has been claimed that comprehensive systems of perspective were evolved in antiquity, but most scholars do not accept this.
Split into simpler sentences: Some of the paintings found in the ruins of Pompeii show a remarkable realism and perspective for their time. It has been claimed that comprehensive systems of perspective were evolved in antiquity, but most scholars do not accept this.