Anchor: "Had a good walk with Dr. Bauerstein?" I asked, trying to appear as indifferent as I could. 
Entailed: I asked if they had a good walk.
Contradiction: I asked if the had a good sleep with Dr. Bauerstein.
Contradiction: She did not say so.
Contradiction: Technology can be advanced.
Contradiction: This exciting and outrageous book has no virtues. 
Contradiction: A black man wearing a green hat.