Anchor: There is nothing that can compromise him in any way, since it is Miss Howard who has the strychnine, which, after all, is only wanted as a blind to throw suspicion on John Cavendish. 
Entailed: He can not be compromised in any way.
Contradiction: It is not Miss Howard who has the strychnine, but rather John Cavendish.
Contradiction: A girl on a swing.
Contradiction: People are holding up their hands.
Contradiction: A gardener trims a shrub in the yard.
Contradiction: Hiker climbing down a mountain