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.

Ex Input:
The patient's blurred vision gradually improved, but visual field defect remained.

Ex Output:
non-adverse drug event


Ex Input:
Chylous ascites, a rare compliation following retroperitoneal lymph node dissection, has not been reported as a means of spread of testicular cancer.

Ex Output:
non-adverse drug event


Ex Input:
It has activity against both the positive and negative symptoms of schizophrenia, which has made it an alternative to traditional antipsychotic medications such as haloperidol.

Ex Output:

non-adverse drug event