9181
We report a case of sustained hypotension after administration of parenteral verapamil .
 adverse effect: sustained hypotension, verapamil
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:  sustained hypotension, verapamil 
Answer:
 adverse effect: sustained hypotension, verapamil