Anchor: Although ancient Alexandria sank into the sea, the city continued to flourish as a trading port.
Entailed: Alexandria, despite sinking into the sea, was a successful trading port.
Contradiction: The city lost its thriving trading port. 
Contradiction: Ancient Alexandria collapsed when it sank into the sea, killing all inhabitants.
Contradiction: Every defendant had to pay over $300 in fines.
Contradiction: Vreena talked to the dark-skinned man.
Contradiction: The people are asleep on the couch.