Anchor: People wait to board boats.
Entailed: There is more than one boat for people to board.
Contradiction: The people are at the airport waiting to board a plane.
Contradiction: Mann did not have any legal constraints.
Contradiction: I'm uncertain as to whether we would make a good couple.
Contradiction: Two fashionably dressed gentleman order wine at a nice restaurant.
Contradiction: Rajmund was concerned for her happiness so he tried to cheer her up.