original_query: What are the names of the five companies that operated from King's Cross Thameslink station?
query: What are the names of the five companies that operated from King's Cross Metropolitan station during the late 19th century?
answer: The five companies that operated from King's Cross Metropolitan station in the late 19th century were the Metropolitan, Great Northern Railway (GNR), Midland, London, Chatham and Dover Railway (LCDR), and the South Eastern Railway (SER).