Anchor: The answer to the question How does the device work?
Entailed: The answer to whoever asked how did the device work.
Contradiction: The answer to whoever asked how did kissing work.
Contradiction: Ghandi preferred to wear a suit and tie at all times. 
Contradiction: I gave her a bewildered and curious look.
Contradiction: They were going to continue into the next two weeks.
Contradiction: Postal Rate Commission reviewed Postal Service Product Innovations and Special-Purpose Mail Classification Changes on Jan 1, 2000.