Complex sentence: Commonly known as the Chapples building because its major occupant from 1913 to 1981 was the department store run by the Chapples family, this building is more properly known as the Grain Exchange Building.
Split into simpler sentences: Commonly known as the Chapples building because its major occupant from 1913 to 1981 was the department store run by the Chapples family. This building is more properly known as the Grain Exchange Building.