Anchor: They seemed to be reminiscing over old times.
Entailed: They were thinking about the past. 
Contradiction: They had no memory of anything. 
Contradiction: Two dogs play in the green grass.
Contradiction: My wife's grandparents are from Boston.
Contradiction: I hated talking to you right now.
Contradiction: He would regret deeply if anything were to happen to Tommy, but he didn't really have any way to prevent it if it did.