Anchor: A bookcase crammed with tightly squeezed volumes provided a resting place for pieces of native pottery bearing grotesque animal designs.
Entailed: The native pottery, bearing ugly animal designs, rested on the stuffed bookcase.
Contradiction: The books lie strewn across the floor, with no bookcase to hold them. 
Contradiction: The USA is not part of this commission. 
Contradiction: Runners are on a busy street.
Contradiction: An old man is sleeping on the street.
Contradiction: It was already contained in the mixture.