8797
A 52 year - old male patient diagnosed of ankylosing spondylitis presented with an iron deficiency anemia after a ten - month treatment of methotrexate .
 adverse effect: iron deficiency anemia, methotrexate
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:  iron deficiency anemia, methotrexate 
Answer:
 adverse effect: iron deficiency anemia, methotrexate