sentences:  South Durham and Lancashire Union Railway
  
  The South Durham & Lancashire Union Railway (SD&LUR) built a railway line linking the Stockton & Darlington Railway near Bishop Auckland with the Lancaster and Carlisle Railway (the West Coast Main Line) at Tebay, via Barnard Castle, Stainmore Summit and Kirkby Stephen.The line opened in 1861 and became known as the Stainmore Line.