Text: To make that clear to you, I will read you an extract from a book on dispensing which I found in the Dispensary of the Red Cross Hospital at Tadminster: "'The following prescription has become famous in text books: Strychninae Sulph  ¦  ¦ gr.I Potass Bromide  ¦  ¦ .
Entailment: I found a book in the Dispensary of the Red Cross Hospital at Tadminster.
Contradiction: I searched for books at the Dispensary of the Red Cross Hospital at Tadminster, but I found none.