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.

[Q]: He was successfully transplanted.
[A]: non-adverse drug event


[Q]: Neuroimaging shows bilateral subcortical and cortical edema with prominent posterior distribution.
[A]: non-adverse drug event


[Q]: After abstinence from oolong tea his delirium resolved.
[A]:
adverse drug event