Complex sentence: The 5 storey Montreal City Hall (Hôtel de Ville) is the work of architects Henri-Maurice Perrault and Alexander Cowper Hutchison, built between 1872 and 1878 in the Second Empire style, also known as Napoléon III-style.
Split into simpler sentences: The 5 storey Montreal City Hall ("Hôtel de Ville") is the work of architects Henri-Maurice Perrault and Alexander Cowper Hutchison, built between 1872 and 1878. Its architecture is in the Second Empire style, also known as Napoléon III-style.