Anchor: The  New Rome  soon achieved a preeminence in the Christian world that it would retain for 1,000 years.
Entailed: Rome would retain the preeminence that it obtained for 1,000 years.
Contradiction: Rome failed to achieve a preeminence in the Christian world.
Contradiction: A child is riding a pony in the park .
Contradiction: Penguins can be seen at the Edinburgh Zoo in summer.
Contradiction: People taking a picture on a beach.
Contradiction: Him, or another; I'll take either.