Anchor: Obviously somebody must have crept up behind him as he listened and struck him down with a blow on the head.
Entailed: He got a head injury
Contradiction: The person did not affect him
Contradiction: His mind was always sharp on trips, never straying from the important things in his life.
Contradiction: A crowd of people is photographed at an event.
Contradiction: You can leave it without worrying about it.
Contradiction: A woman is carrying things.