Anchor: Two brown dogs playfully chase a red and white soccer ball.
Entailed: Animals are playing with a ball.
Contradiction: Two dogs are playing tug of war with a rope.
Contradiction: They have done it many times before so they were pressing their luck.
Contradiction: Humans in conflict.
Contradiction: How do they expect illiterate folks to operate tanks on this shoestring budget?
Contradiction: People are standing around a stand of watermelons.