Question: Roger Morris, famous for helping to develop a 50km rail tunnel linking Folkestone to Coquelles is also famous for which other project?
Sentence (from "Channel Tunnel"): At 37.9 km , the tunnel has the longest undersea portion of any tunnel in the world, although the Seikan Tunnel in Japan is both longer overall at 53.85 km and deeper at 240 m below sea level.
Relevant evidence: No