Complex sentence: The Northern Outfall Sewer is a major sewer which runs from central London to Beckton in east London; it was designed by Joseph Bazalgette after an outbreak of cholera in 1853 and "The Big Stink" of 1858.
Split into simpler sentences: The Northern Outfall Sewer is a major sewer from central London to Beckton in east London. It was designed by Joseph Bazalgette after an outbreak of cholera in 1853 and "The Big Stink" of 1858.