Complex sentence: After owning the property for 31 years, Palumbo removed the art and sold the property at auction to the National Trust for Historic Preservation in 2003 for a reported $7.5 million, and building tours are now conducted by the Landmarks Preservation Council of Illinois.
Split into simpler sentences: After owning the property for 31 years, Palumbo removed the art and sold the property at auction to the National Trust for Historic Preservation in 2003 for $7.5 million. Public tours are now conducted by the Landmarks Preservation Council of Illinois.