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: Graves' hyperthyroidism following transient thyrotoxicosis during interferon therapy for chronic hepatitis type C.
Example Output: adverse drug event

Example Input: A 26-year-old Japanese man, who had been receiving medical attention for ulcerative colitis for one year, presented with diffuse erythema and pustules on his face and trunk, malaise, and fever up to 39 degrees C one day after the administration of salazosulfapyridine.
Example Output: adverse drug event

Example Input: A 55-year-old woman with systemic lupus erythematosus was admitted with fever of unknown origin.
Example Output:
non-adverse drug event