Anchor: Before I wrote you, I investigated your position in the planetary economy."
Entailed: Before writing to you, I studied your position in the planetary economy.
Contradiction: I investigated your position in the planetary economy after I wrote to you.
Contradiction: The man is wearing a bikini.
Contradiction: The paper refers to street delivery as delivery function. 
Contradiction: The agency is not expecting to have its personnel available for an entrance conference.
Contradiction: A group of people with their TV in the background.