
TASK: Please classify the relationship between the given premise and hypothesis into one of the following labels: entailment, contradiction, or neutral. Return only the label.
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INPUT: [PRE] On [**3135-10-17**] he also underwent an ERCP that revealed common bile duct stricture which was stented with a plastic stent. [HYP]  ERCP revealed normal biliary tree anatomy
OUTPUT:

entailment contradiction neutral