4027
The incidence of angioedema secondary to losartan , an angiotensin II receptor antagonist , is unknown .
 adverse effect: angioedema, losartan
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:  angioedema, losartan 
Answer:
 adverse effect: angioedema, losartan