Anchor: 500 until around a.d. 800).
Entailed: It lasted until 800 AD.
Contradiction: The city didn't exist in 800 AD.
Contradiction: The man is sleeping on the subway.
Contradiction: A human walking
Contradiction: The men are playing basketball.
Contradiction: We had found strychnine and a pair of glasses that could only belong to Mr. Inglethorp in his underwear drawer.