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Protease inhibitors ( ritonavir and saquinavir ) were added to the treatment and the patient developed progressive ataxia related to carbamazepine toxicity .
 adverse effect: carbamazepine toxicity, carbamazepine; adverse effect: carbamazepine toxicity, ritonavir; adverse effect: carbamazepine toxicity, saquinavir; adverse effect: progressive ataxia, carbamazepine; adverse effect: progressive ataxia, ritonavir; adverse effect: progressive ataxia, saquinavir
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: carbamazepine toxicity, carbamazepine; adverse effect: carbamazepine toxicity, ritonavir; adverse effect: carbamazepine toxicity, saquinavir; adverse effect: progressive ataxia, carbamazepine; adverse effect: progressive ataxia, ritonavir; adverse effect: progressive ataxia, saquinavir