Anchor: Well, I learnt that Miss Howard had been on afternoon duty on Tuesday, and that ”a convoy coming in unexpectedly ”she had kindly offered to remain on night duty, which offer was gratefully accepted. 
Entailed: I was grateful when I learnt that Miss Howard had offered to remain on night duty.
Contradiction: Miss Howard had been free on Tuesday and had not been keen to take on the night duty.
Contradiction: It started in 1459.
Contradiction: A man hangs off a big rock
Contradiction: Don't keep your eyes on the past.
Contradiction: People are playing hockey.