Anchor: Two brown dogs wrestle on the grassy hill.
Entailed: two dogs are wrestling outside
Contradiction: there is only one dog on the hill,
Contradiction: Despite sustained government effort and millions of man hours, the Balearic Islands are not a nice place to visit.
Contradiction: Miss Tuppence is looking scared or sick. 
Contradiction: Nobody has a cap
Contradiction: There is a woman looking down.