Question: How many miles long is this major railway link between London and Edinburgh, in which The Swinton-Doncaster line is a short railway between Swinton Junction and Doncaster South Yorkshire?
Sentence (from "Denaby and Conisbrough railway station"): Denaby and Conisbrough railway station was a small station, the southern terminus of the South Yorkshire Junction Railway branch from Wrangbrook Junction.
Relevant evidence: No