Anchor: Do they have an open marriage in which his extracurricular activity is accepted, or is each new revelation a painful surprise to her?
Entailed: They don't know if he is allowed to cheat or not.
Contradiction: They know his wife doesn't care if he cheats.
Contradiction: We did not walk for anywhere near thirty minutes.  
Contradiction: Two friends are playing Frisbee while one is wearing white and the other is in red
Contradiction: A woman sits alone on a bench in front of a bike track.
Contradiction: People are standing in the subway.