Anchor: exchange electronic messages, obtain data from remote computer sites, and maintain critical records.
Entailed: You must maintain critical records.
Contradiction: You don't have to keep any records.
Contradiction: The airplane was in the sky.
Contradiction: McCain failed to work a better education proposal out.
Contradiction: Appendix B is where you will find Exhibits A-1 and A-2.
Contradiction: A buzz of commercial activity has seen fancy restaurants and wine bars open as a result of the old warehouses being renovated into upscale apartments and stylish office buildings