Complex sentence: Moreover, the Club has hosted dozens of prestigious tournaments, including the North American Debating Championship and the World Universities Debating Championship, the latter of which it has won twice; in 1981 and 2006.
Split into simpler sentences: Moreover, the Club has hosted dozens of prestigious tournaments, including the North American Debating Championship and the World Universities Debating Championship. The club has also won the World Universities Debating Championship twice; in 1981 and 2006.