Anchor: Two guys are assembling a monument on top of a tree.
Entailed: Two males are in a tree.
Contradiction: A cup is filled with coffee.
Contradiction: The cave dwellers came to inhabit the region by conquering its city dwellers.
Contradiction: Slowly, he read it. 
Contradiction: The two archers are sitting down having a drink after their match.
Contradiction: the boy is playing