Answer:
It would be
"Juan es de la capital de georgia"
Step-by-step explanation:
"Es" is a ser verb and it is talking about the él form.
These are the general uses of ser and estar for reference.
Ser: Descriptions, Occupation, Characteristics, Time/Date, Origins, Relationships
Estar: Position Location, Action, Condition, Emotion
So, It would be a ser verb because it describes where Juan is from which is an origin stated in the general uses of ser.
So the word "es" would go in the blank.