9053
We describe two dark - skinned patients who developed hyperpigmented skin and tongue lesions during combination therapy with IFN and ribavirin .
 adverse effect: hyperpigmented skin, IFN; adverse effect: hyperpigmented skin, ribavirin; adverse effect: tongue lesions, IFN; adverse effect: tongue lesions, ribavirin
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 adverse effect: hyperpigmented skin, IFN; adverse effect: hyperpigmented skin, ribavirin; adverse effect: tongue lesions, IFN; adverse effect: tongue lesions, ribavirin