Premise: Connaught Tunnel . The 5.022 mi tunnel carries the Canadian Pacific Railway main line under Mount Macdonald and replaced the railway 's previous routing over Rogers Pass , which had been struck by several deadly avalanches since its completion in 1885 . In the late 1980s , the Mount Macdonald Tunnel was built to supplement the Connaught Tunnel and to lessen the grade on the eastern approach to the pass .
Hypothesis: Connaught Tunnel is supplemented by a tunnel.
Label: ENTAILMENT