4974
While on a maximal dose of phenylephrine she developed prominent positive U waves , which disappeared with the cessation of the drug .
 adverse effect: positive U waves, phenylephrine
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: adverse effect 
Text: {0} 
 Entity Pairs:  positive U waves, phenylephrine 
Answer:
 adverse effect: positive U waves, phenylephrine