Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page AfricaRail:

"

A future stage is proposed to link Mali, Senegal, which are also 1,000 mm (3 ft 3+38 in) gauge; Nigeria and Ghana have a different narrow gauge of 1,067 mm (3 ft 6 in) but are converting to 1,435 mm (4 ft 8+12 in).[citation needed]