6587
OBSERVATIONS : A 48-year - old woman presented with disfiguring facial edema 10 weeks after she began antiviral therapy with peginterferon alfa-2a and ribavirin for chronic hepatitis C infection .
 adverse effect: disfiguring facial edema, peginterferon alfa-2a; adverse effect: disfiguring facial edema, ribavirin
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:  disfiguring facial edema, peginterferon alfa-2a; disfiguring facial edema, ribavirin 
Answer:
 adverse effect: disfiguring facial edema, peginterferon alfa-2a; adverse effect: disfiguring facial edema, ribavirin