Anchor: The test involved staging a surprise bomb scare to get employees, who were unaware that the threat was a pretense, to evacuate the building.
Entailed: A false bomb scare was used to get employees to evacuate the building.
Contradiction: Only fire drills are used to practice building evacuations.
Contradiction: These essays can be found in one book only, in the library.
Contradiction: Did they get stuck?
Contradiction: People cannot hire windsurfing gear at Formentera and Ibiza. 
Contradiction: A boy and girl are standing beside the water.