1310
Case 4: A 61-year-old male alcoholic who remained completely abstinent while taking cyanamide for 3 years showed slight elevation of serum transaminases.
 adverse event: taking 
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: adverse event, potential therapeutic event 
Text: {0} 
Answer:
 adverse event: taking 