Anchor: But the empire's troubles increased as invaders made further incursions into Byzantine territory.
Entailed: The invaders pushed deeper into Byzantine territory, causing troubles for the empire.
Contradiction: The invaders retreated from Byzantine territory.
Contradiction: The family medicine departments do not treat alcohol problems. 
Contradiction: The new draft legislation will allow employees to use frequent flyer benefits for personal use.
Contradiction: The firefighters arrived promptly and doused the fire completely before a flame was even visible from outside. 
Contradiction: The two children are outdoors.