Text: And the West benefited from the appointment of Gorbachev, an incompetent but good-natured fellow who played his part as the opposing team's quarterback who kept throwing interceptions.
Entailment: The West benefited greatly from Gorbachev's appointment, who seemingly tried to assist the U.S. during the end of the Cold War.
Contradiction: Gorbachev's appointment was bad news for the United States.