Complex sentence: Prior to and during the German occupation of France in World War II the property was left abandoned, until it was acquired by prominent French horseman Alec Head in 1958, a descendant of the great trainers who founded the English Racing Colony in Chantilly, Oise.
Split into simpler sentences: Prior to and during the German occupation of France in World War II the property was left abandoned. In 1958 the farm was acquired by prominent French horseman Alec Head, a descendant of the trainers who founded the English Racing Colony in Chantilly, Oise.