Anchor: Although the main building is not open to the public, the official residence of the Portuguese government may be visited by prearranged, guided tours.
Entailed: The main building isn't accessible to the public although visits can be arranged.
Contradiction: The main building is always accessible to the public.
Contradiction: The workers are cleaning gutters
Contradiction: a man is throwing something
Contradiction: Spike and Jimi are in the 7th grade
Contradiction: Two women are talking and sititng on stairs