Complex sentence: The Cunard Building is noted in Liverpool for its distinctive shape, it is wider at the back than the front, it was designed like this to resemble a boat, widening from prow to stern.
Split into simpler sentences: The Cunard Building is noted in Liverpool for its distinctive shape; it is wider at the back than the front. It is said to have been designed like this to resemble a boat, widening from prow to stern.