Anchor: A man wearing a safety jacket is in the cockpit of an airplane.
Entailed: A man wearing a safety vest.
Contradiction: A cowboy rounding up his cattle herd.
Contradiction: A man is making a salad.
Contradiction: You will get a ride if you decide to hitch-hike.
Contradiction: Do you like rainbows and unicorns?
Contradiction: The point of David Frum's argument in the Gay Marriage dialogue seems to boil down to Look at how severely and for the worse marriage has changed in the last 30 years.