8609
A possible mechanism for focal neurological deficit in brain - damaged patients on phenytoin therapy is discussed .
 adverse effect: focal neurological deficit, phenytoin
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: adverse effect 
Text: {0} 
 Entity Pairs:  focal neurological deficit, phenytoin 
Answer:
 adverse effect: focal neurological deficit, phenytoin