Anchor: If he let it go suddenly, the men inside would be almost certain to notice it, so, with the same infinite pains, he reversed his former tactics.
Entailed: There was a risk that the men inside would notice it, if he let go suddenly.
Contradiction: If he let go suddenly, no one would have noticed it, so he did.
Contradiction: The lady didn't open the door.
Contradiction: People watch as two other people move their bodies together.
Contradiction: That's boring, and she doesn't do that.
Contradiction: A group of people are standing next to sound equipment.