Complex sentence: The Royal Docks comprise three docks in east London-the Royal Albert Dock, the Royal Victoria Dock and the King George V Dock, built between 1880 and 1921 on riverside marshes in the London borough of Newham.
Split into simpler sentences: The Royal Docks comprise three docks in east London-the Royal Albert Dock, the Royal Victoria Dock and the King George V Dock. The three docks were built between 1880 and 1921 on riverside marshes in the London borough of Newham.