Anchor: Undoubtedly the discovery of an undisturbed tomb and its vast treasure trove in 1922 is what maintains its popularity.
Entailed: There is no doubt that the 1922 discovery of an undisturbed tomb is what has maintained its popularity. 
Contradiction: We do not believe that a tomb filled with treasure makes it popular to this day.  
Contradiction: The uncovering of an undisturbed tomb led to a significant decline in its popularity. 
Contradiction: Children ride a train in the park.
Contradiction:  A dog jumps and catches his toy.
Contradiction: It brings out all their bad qualities.