Text: The Lincoln Bedroom, for example, contains none other than Lincoln's own ornate bed (if indeed he ever slept in it; questions have been raised about that, too), the one for which Calvin Coolidge's wife labored two years to make a sufficiently large quilt.
Entailment: Lincoln's own bed is in his bedroom, but he may have never slept in it.
Contradiction: Calvin Coolidge's wife decided not to make a quilt for the bed.