Anchor: Participants raised the question whether the current system of selecting directors needs to be reexamined because the existing system from a shareholders' point of view has not been working to get the right people on boards.
Entailed:  Participants raised the question whether the current system of selecting directors needs to be reexamined.
Contradiction: No  participants raised the question whether the current system of selecting directors needs to be reexamined.
Contradiction: They didn't want to learn if for any reason. 
Contradiction: A person wearing a plaid hat sits in a lawn chair reading a magazine
Contradiction: There was no salt on the tray.
Contradiction: There are multiple water sports where floating equipment is used.