The strychnine that killed Mrs. Inglethorp was the identical strychnine prescribed by Dr. 
The prescription was picked up by the same person that poured Mrs. Inglethorp's medicine. 
mnli hypothesis: The prescription was picked up by the same person that poured Mrs. Inglethorp's medicine.  premise: The strychnine that killed Mrs. Inglethorp was the identical strychnine prescribed by Dr. 