Complex sentence: During the 2006--07 football season, A.S. Roma played its 74th Serie A league season, finishing runner-up; the UEFA Champions League, finishing as quarter-finalists; and the Coppa Italia, winning the trophy for the eighth time.
Split into simpler sentences: During the 2006--07 football season, A.S. Roma played its 74th Serie A league season, finishing runner-up. The club also competed in the UEFA Champions League, finishing as quarter-finalists, and the Coppa Italia, winning the trophy for the eighth time.