4961
Although the data indicate an immune - complex cause for gold - salt nephropathy , the incident antigen ( or antigens ) and mechanism of action remain unidentified .
 adverse effect: nephropathy, gold - salt
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:  nephropathy, gold - salt 
Answer:
 adverse effect: nephropathy, gold - salt