Complex sentence: The Portland Club at 156 State Street (The Hunnewell-Shepley Mansion) in Portland, Maine, was built in 1805, with later updates on the mansion by John Calvin Stevens (1855-1924).
Split into simpler sentences: The Portland Club is a building at 156 State Street (The Hunnewell-Shepley Mansion) in Portland, Maine. It was built in 1805, with later updates to the mansion by John Calvin Stevens (1855-1924).