Anchor: The lively cattle market makes Penrith a center for the economic activity of the area.
Entailed: Penrith is a center for the economic activity of the area, because of the lively cattle market.
Contradiction: Lack of lively cattle market makes Penrith an unknown countryside.
Contradiction: No, not that.  
Contradiction: The child accelerated as the sled went down the hill.
Contradiction: Person swimming in the water by a jet-ski.
Contradiction: Adhere to the rules, for a safe and healthy work environment.