Anchor: The construction of Hoover Dam did not single-handedly save Las Vegas, however.
Entailed: Las Vegas was not saved by the construction of a dam alone.
Contradiction: Constructing the Hoover Dam was the one thing that saved Las Vegas.
Contradiction: The cobblestone road is entirely stick-straight.
Contradiction: That is what I am doing now, making dinner.
Contradiction: I cannot pursue this any longer.
Contradiction: The young boy is coloring.