Anchor: There are people sitting down on the ground in front of a gray beach.
Entailed: People are on the beach.
Contradiction: People are indoors.
Contradiction: Each study had three labs participating. 
Contradiction: Everyone in the company except Thorn and the Kal rode small desert horses.
Contradiction: Two dogs fight with each other to the death.
Contradiction: The president called for a Cabinet-level policy review in April.