Anchor: Kennedy's trumpet call, Ask not what your country can do for  Ask what you can do for your country, has an ironic history.
Entailed: Kennedy said, "Ask not what your country can do for Ask what you can do for your country."
Contradiction: Kennedy never made any speeches.  
Contradiction: Goodbye
Contradiction: More progressive that the Archaics, the Anasazi used formal agricultural techniques to assist them in their harvests.
Contradiction: The photographs show old people.
Contradiction: There are two males sitting.