Anchor: She had a dagger of stone obsidian.
Entailed: Her dagger was made out of stone obsidian.
Contradiction: The dagger was made of ice. 
Contradiction: The construction of the church took less than a century.
Contradiction: In the USA, the teams from FEMA
Contradiction: They extremely value ethics.
Contradiction: The value of life has altruistic values associated with it.