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A 43-year - old white man developed a shallow erosion of a psoriatic plaque after chronic administration of methotrexate .
 adverse effect: erosion of a psoriatic plaque, methotrexate
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: erosion of a psoriatic plaque, methotrexate