What was the minimum points against if the opponent is Port Adelaide?
CREATE TABLE table_25229283_4 (points_against INTEGER, opponent VARCHAR)
SELECT MIN(points_against) FROM table_25229283_4 WHERE opponent = "Port Adelaide"
### Context: CREATE TABLE table_25229283_4 (points_against INTEGER, opponent VARCHAR) ### Question: What was the minimum points against if the opponent is Port Adelaide? ### Answer: SELECT MIN(points_against) FROM table_25229283_4 WHERE opponent = "Port Adelaide"