Anchor: Two scuba divers are diving underwater.
Entailed: Two divers are underwater.
Contradiction: Two scuba divers sitting on a boat.
Contradiction: You should worry if you get a film at the bottom of the pot.
Contradiction: Someone was climbing a mountain.
Contradiction: Leading by example in strategic human capital management is not something we are responsible for. 
Contradiction: Serbian rule over Kosovars is hard to imagine.