6239
RESULTS : Both patients experienced a previously unreported side effect -- falling backward -- associated with bupropion use .
 adverse effect: falling backward, bupropion
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:  falling backward, bupropion 
Answer:
 adverse effect: falling backward, bupropion