Anchor: Granite markers erected in 1991 indicate the line of the old city walls.
Entailed: The line of the old city walls is indicated by granite markers.
Contradiction: The old city walls are still intact and easy to follow.
Contradiction: Yes, I have done that before.
Contradiction: Research support should not be for the development of new models.
Contradiction: A girl is riding a bike
Contradiction: Federal performance is sadly inadequate.