1808
Idiosyncratic factors involving vasopressin receptor affinity and distribution , vasopressin - associated vasodilation in some vascular beds , and the effect of vasopressin on the renin - angiotensin system may further contribute to impaired tissue perfusion .
 adverse effect: impaired tissue perfusion, vasopressin; adverse effect: vasodilation, vasopressin
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:  impaired tissue perfusion, vasopressin; vasodilation, vasopressin 
Answer:
 adverse effect: impaired tissue perfusion, vasopressin; adverse effect: vasodilation, vasopressin