CREATE TABLE table_name_78 (location VARCHAR2, result VARCHAR2, opponent VARCHAR2)

What is the location for the win against Johan Mparmpagiannis?
SELECT location FROM table_name_78 WHERE result = "win" AND opponent = "johan mparmpagiannis"
SELECT "location" FROM "table_name_78" WHERE "johan mparmpagiannis" = "opponent" AND "result" = "win"