Anchor: For reasons of economy she did not take a bus.
Entailed: She didn't take a bus for economical reasons. 
Contradiction: She always rode in limousines because she could afford to. 
Contradiction: two people running a marathon
Contradiction: The man is wearing a helmet while riding a bike.
Contradiction: I love exercising and am easily motivated to do it.
Contradiction: The individual thought they would end up in prison.