Anchor: A man sits on a bench reading a newspaper.
Entailed: A man sits on the bench.
Contradiction: The woman sits on a bench reading her iphone.
Contradiction: A dog chases his ball in the grass.
Contradiction: John Kenneth Galbraith was a US ambassador. 
Contradiction: The people are swimming in an indoor pool.
Contradiction: Today's Alentejo region of south-central Portugal and the north is where the prehistoric cultures flourished.