Anchor: They immediately began work on the formidable fortifications for which the city is still famous.
Entailed: The city is still famous for its formidable fortifications.
Contradiction: They left the formidable fortifications as is for now.
Contradiction: Human watching tv.
Contradiction: When using the test on a population that has a lower case rate, it does not do as good of a job. 
Contradiction: A person is playing a guitar on the moon.
Contradiction: Ca'daan's father told him about the town.