Anchor: Some separations of the CEO and chairman functions are successful and others are not.
Entailed: Certain separation of the functions of the CEO and chairman are successful.
Contradiction: All separated functions of the CEO and chairman are successful. 
Contradiction: A crowd is watching a horseback race.
Contradiction: People  are surrounded by glass.
Contradiction: They did not analyse the cost and benefit.
Contradiction: Two children enjoy some time outside.