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.

Example Input: Many new serotonergic antidepressants have been introduced over the past decade.
Example Output: non-adverse drug event

Example Input: We experienced 2 cases of mequitazine-induced photosensitivity reaction in patients who took mequitazine for their dermatologic problems.
Example Output: adverse drug event

Example Input: The use of methylphenidate and imipramine in Gilles de la Tourette's disease in children.
Example Output:
non-adverse drug event