For the player who scored 7 shorthanded goals in 1989, what's his dominant hand?
1989 refers to the year of scoring; "dominant hand" and "shooting hand" are synonyms which refers to shootCatch


SELECT T1.shootCatch FROM Master AS T1 INNER JOIN Scoring AS T2 ON T1.playerID = T2.playerID WHERE T2.year = 1989 GROUP BY T2.playerID HAVING SUM(T2.SHG) = 7