Question:  Doncaster iPort is connected to the rail network through the main line that is what length?
Sentence (from "Doncaster iPort"): Doncaster iPort or Doncaster Inland Port is an intermodal rail terminal; a "Strategic Rail Freight Interchange", under construction west of Rossington and south of Doncaster at junction 3 of the M18 motorway in England.
Relevant evidence: No