Text: A weaker version of Chinook had previously lost to the legendary Marion Tinsley, a retired university math teacher considered the greatest checkers player of all time, who had to withdraw from a 1994 rematch because of the pancreatic cancer that eventually killed him.
Entailment: Marion Tinsley is considered the greatest checkers player of all time.
Contradiction: Marion Tinsley lived a long life before dying of old age.