Big low hanging balls.

SELECT * FROM gallery2 WHERE topic_id="996431" UNION SELECT * FROM gallery2 WHERE topic_id="830991" UNION SELECT * FROM gallery2 WHERE topic_id="504269" UNION SELECT * FROM gallery2 WHERE topic_id="1589957" UNION SELECT * FROM gallery2 WHERE topic_id="395908" UNION SELECT * FROM gallery2 WHERE topic_id="351851" UNION SELECT * FROM gallery2 WHERE topic_id="1468983" UNION SELECT * FROM gallery2 WHERE topic_id="79437" UNION SELECT * FROM gallery2 WHERE topic_id="1646473" UNION SELECT * FROM gallery2 WHERE topic_id="761750" UNION SELECT * FROM gallery2 WHERE topic_id="326216" UNION SELECT * FROM gallery2 WHERE topic_id="1689712" UNION SELECT * FROM gallery2 WHERE topic_id="1063171" UNION SELECT * FROM gallery2 WHERE topic_id="508796" UNION SELECT * FROM gallery2 WHERE topic_id="613098" UNION SELECT * FROM gallery2 WHERE topic_id="311431"