Anchor: He admitted that many times a positive blood alcohol test in patients with head injuries can be trouble-some.
Entailed: Positive blood alcohol test can be troublesome for patients with head injuries. 
Contradiction: A positive blood alcohol test is good for patients with head injuries. 
Contradiction: A man is sitting on a sofa.
Contradiction: Is your child employed by TI?
Contradiction: The group of people are in pajamas.
Contradiction: Also known as the army.