3973
The incidence of oral - verapamil - induced hypotension in the presence of concomitant beta - adrenergic blockade by the oral route is quite rare .
 adverse effect: 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:  hypotension, verapamil 
Answer:
 adverse effect: hypotension, verapamil