Anchor: Of course, some ED patients may spontaneously volunteer information about drinking.
Entailed: Some patients will randomly volunteer information about their drinking habits.
Contradiction: None of the patients ever voluntarily offer up information on drinking. 
Contradiction: A man is sitting at home on the couch.
Contradiction: A group of people are outside.
Contradiction: The two people are swimming in the lake.
Contradiction: The manis entertaining the crowd.