Anchor: A crowd of people containing some people who are smiling and some who are taking photographs.
Entailed: Some of the people in the crowd have cameras.
Contradiction: Everyone in the crowd are angry.
Contradiction: The foaming action of bleach makes all the difference.
Contradiction: A man looks through a telescope
Contradiction: There are no means of estimating value changes in visibility at National PArks.
Contradiction: An interest in American politics makes this more interesting.