Complex sentence: Built in 1931 at a cost of $235,000, it replaced an earlier brick building on the same site that dated from 1885, during the era of the notorious Walter Murray Gibson, so the new structure is also known as the Walter Murray Gibson Building.
Split into simpler sentences: Built in 1931 at a cost of $235,000, it replaced an earlier brick building on the same site that dated from 1885, during the era of the notorious Walter Murray Gibson. In fact, the new structure is also known as the Walter Murray Gibson Building.