Anchor: Gephardt might or might not emerge as a serious challenger to Gore.
Entailed: It is unclear if Gephardt will emerge as a serious challenger to Gore. 
Contradiction: Gephardt would never challenge Gore. 
Contradiction: The blacksmith is playing a rousing game of tennis.
Contradiction: Yes, the price needs to be though about
Contradiction: I'm not going to bother fixing my flat tire.
Contradiction: There would be a solution to the proposed idea if I was able to swarm.