Anchor: Because of the location and the restaurant's popularity, you must reserve a table.
Entailed: Reserving a table is necessary because of the restaurant's popularity and ideal location.
Contradiction: The restaurant does not take reservations, but is never too busy. 
Contradiction: The fort is still intact and can be visited.
Contradiction: A dog jumps into water
Contradiction: Two dogs lay sleeping on the grass.
Contradiction: An occupied boat is floating.