Anchor: A group of seven friends are jumping near the bank of a brown river.
Entailed: A group of friends jump.
Contradiction: A group of friends start a forest fire.
Contradiction: It did not snow and the weather was freezing a day later.  
Contradiction: There are a lot of international banks that do business here.
Contradiction: We don't consider human considerations to be important.
Contradiction: Some policeman at their office.