Complex sentence: In 1992, Queen's alumnus Alfred Bader learned of the castle's vacancy and initially offered to purchase the castle for his wife; she declined, joking that there would be "too many rooms to clean".
Split into simpler sentences: In 1992, Queen's alumnus Alfred Bader learned of the castle's vacancy. He offered to purchase the castle for his wife, but she declined, joking that there would be "too many rooms to clean".