6616
The authors report a case of Balint syndrome with irreversible posterior leukoencephalopathy on MRI following intrathecal methotrexate and cytarabine .
 adverse effect: Balint syndrome, cytarabine; adverse effect: Balint syndrome, methotrexate; adverse effect: posterior leukoencephalopathy, cytarabine; adverse effect: posterior leukoencephalopathy, 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: Balint syndrome, cytarabine; adverse effect: Balint syndrome, methotrexate; adverse effect: posterior leukoencephalopathy, cytarabine; adverse effect: posterior leukoencephalopathy, methotrexate