Anchor: People are standing near a food vendor in a park.
Entailed: There are people standing in the park.
Contradiction: People are sitting outside of a restaurant.
Contradiction: the person is sitting down, but about to get up.
Contradiction: The exploratory study looked at four demonstration sites before conducting the evaluation. 
Contradiction: I was one hundred percent wrong as a senator.
Contradiction: There are many difficult personnel issues with the GAO and the executive branch.