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: However, one patient exhibited severe hypersensitivity reactions including cardiac arrest and apnea, and another four patients developed eruptions, hypotension, and tachycardia soon after administration of CBDCA.
Example Output: adverse drug event

Example Input: For 9 years the patient remained totally asymptomatic.
Example Output: non-adverse drug event

Example Input: Lethal anuria complicating high dose ifosfamide chemotherapy in a breast cancer patient with an impaired renal function.
Example Output:
adverse drug event