Complex sentence: During this construction, some original features were removed, including the Equestrian Statue Of George I, by John van Nost the Elder, which was moved in 1798 to the gardens of the Mansion House.
Split into simpler sentences: During this construction, some original features were removed. A statue, by John van Nost the Elder, of George I on Horseback, was moved in 1798 to the gardens of the Mansion House.