Complex sentence: "Vesuvius in Eruption" is the subject of thirty paintings and at least one preliminary sketch by Joseph Wright of Derby, who travelled in Italy in the years 1773-1775.It appears that whilst Wright was in Italy Vesuvius was not erupting.
Split into simpler sentences: Vesuvius in Eruption is the subject of thirty paintings and at least one preliminary sketch by Joseph Wright of Derby, who travelled in Italy in the years 1773-1775. Surprisingly it appears that whilst Wright was in Italy Vesuvius was not erupting.