Complex sentence: In the 4th century, the Emperor Julian had a vineyard near Paris on the hill of Montmartre, and a 5th-century villa in what is now Épernay shows the Roman influence in the Champagne region.
Split into simpler sentences: In the 4th century, the Emperor Julian had a vineyard near Paris on the hill of Montmartre. A 5th-century villa in what is now Épernay shows the Roman influence in the Champagne region.