Anchor: A national apology for slavery would be hollow and facile, but America should erect a slavery memorial on the Mall.
Entailed: While America probably shouldn't apologize for slavery because it would be meaningless, the country should create a memorial.
Contradiction: While America should apologize for slavery, there isn't enough room on the Mall for any more memorials.
Contradiction: It was not like what a bit of the star would be like. 
Contradiction: This man was the most wanted in the city.
Contradiction: Nothing is working out.
Contradiction: The street is filled