1889
Digestive hemorrhage caused by a Meckel 's diverticulum in a metformin - treated patient : is there any connection ?
 adverse effect: Digestive hemorrhage, metformin
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:  Digestive hemorrhage, metformin 
Answer:
 adverse effect: Digestive hemorrhage, metformin