8371
His symptoms of brain stem compression were alleviated and the role of phenytoin in the production of his craniocervical abnormality is discussed .
 adverse effect: craniocervical abnormality, phenytoin
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: craniocervical abnormality, phenytoin