Anchor: I couldn't rightly say, sir; it was shut but I couldn't say whether it was bolted or not.
Entailed: I wasn't sure if the door was bolted.
Contradiction: I can confidently say that the door was bolted shut.
Contradiction: She believed that time was the issue, rather than the focus of interactions with the patient. 
Contradiction: People believe that the US will save them.
Contradiction: The person reaches in a van
Contradiction: The arrangements that include that person.