Anchor: A surfer looks behind him to see the next wave.
Entailed: A surfer stays attentive to his surroundings.
Contradiction: A surfer standing on the beach next to his board.
Contradiction: You will never own your parents' home there is no chance. 
Contradiction: Appendix II contains a detailed description of the long-term modeling methodology.
Contradiction: All research is done for the benefit of society.
Contradiction: A young boy holds a shovel