Anchor: The innermost coffin is of iron, the next of mahogany, then two of lead, one of ebony, and the outer one of oak.
Entailed: The coffin is made of iron.
Contradiction: The coffin is always made of birch.
Contradiction: There is only one coffin and it is made out of plastic.
Contradiction: The crater is off limits
Contradiction: At presstime, it was impossible to go into the library.
Contradiction: Teodoro did not come to his aid.