Adverse drug reactions are appreciably harmful or unpleasant reactions resulting from an intervention related to the use of medical products, which predicts hazard from future administration and warrants prevention or specific treatment, or alteration of the dosage regimen, or withdrawal of the product. Given medical case reports extracted from MEDLINE, the task is to classify whether the case report mentions the presence of any adverse drug reaction. Classify your answers into non-adverse drug event and adverse drug event.

Input: Consider Input: The results of our investigation were inconclusive, but suggested that the endoscope could have been responsible for some of the cases.

Output: non-adverse drug event


Input: Consider Input: A 74-year-old man received oral administration of pilsicainide, a pure sodium channel blocker with slow recovery kinetics, to convert paroxysmal atrial fibrillation to sinus rhythm and developed loss of consciousness two days later.

Output: adverse drug event


Input: Consider Input: Phenytoin toxicity: an easily missed cause of cerebellar syndrome.


Output: adverse drug event