Anchor: He swung toward Dave, raising the knife into striking position and aiming it at Dave's heart.
Entailed: He pointed the knife at Dave's heart, ready to stab any moment. 
Contradiction: Dave had the knife aimed at him. 
Contradiction: You only have 2 seconds.
Contradiction: There's a very big tree.
Contradiction: The peroxide would dissolve any fabric it touched.
Contradiction: In 15 years Social Security's benefits will outweigh the taxes going to pay for it.