Anchor: However, our survey of federal managers, conducted in late 1996 and 1997, indicates there is substantial room for improvement in this area.
Entailed: Our survey of federal managers was conducted in the late 1996 and 1997.
Contradiction: Our survey was conducted in early 2000.
Contradiction: We don't know why we are here. 
Contradiction: There is a boy
Contradiction: Person sitting in a bank.
Contradiction: A bald man looks at the icy sidewalk.