table: 1-1139835-3
columns: Year, Winners, Grand Finalist, Scores, Venue, Crowd, Margin, Season Result
Q:  who is the grand finalist where scores is 8.9 (57) – 7.12 (54)
A: SELECT Grand Finalist FROM 1-1139835-3 WHERE Scores = '8.9 (57) – 7.12 (54)'