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The purpose of this article is to present the first case - series of posterior reversible encephalopathy syndrome ( PRES ) associated with L - asparaginase treatment .
 adverse effect: posterior reversible encephalopathy syndrome, L - asparaginase; adverse effect: PRES, L - asparaginase
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: posterior reversible encephalopathy syndrome, L - asparaginase; adverse effect: PRES, L - asparaginase