Anchor: I've some letters I must finish by post-time. 
Entailed: I have some letter I must finish before a certain time.
Contradiction: I have no letters to finish.
Contradiction: A man and his two kids are skydiving.
Contradiction: Cherpitel used questions from CAGE and AUDIT to screen an ED population.
Contradiction: Tryall Estate is located really far away from town.
Contradiction: A man is wearing a t-shirt supporting the AIDS walk, while typing on his laptop.