Anchor: A person crosses the stream in front of a waterfall.
Entailed: A person is near the waterfall
Contradiction: The water flows up the waterfall
Contradiction: The children are dropped off and they are to be raised by the sitter.
Contradiction: The story shows how different universes could break away from ours. 
Contradiction: After an hour, they walked on foot towards Carlton House Terrace.
Contradiction: John was about to show a room.