Complex sentence: In 2008, "Kasteel Wittem" and "Hostellerie De Hamert" celebrated with special arrangements the fact that they were together 100 years in business, the first since 1968, the second since 1948.
Split into simpler sentences: In 2008, "Kasteel Wittem" and "Hostellerie De Hamert" celebrated that they were together 100 years in business with a special arrangement. The first since 1968, the second since 1948.