Did you know? Length of South America (North to South) (7,150 km) is 1 thousand x Length of the longest canal tunnel (Rove Tunnel in France) (7.12 km)
Number of passengers on an Underground train on London's Bakerloo Line (847 )
/fact/number-of-passengers-on-an-underground-train-on-londons-bakerloo-line
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If this was a standard unit ...