Difficult Decisions

SELECT * FROM gallery2 WHERE topic_id="1647877" UNION SELECT * FROM gallery2 WHERE topic_id="1643527" UNION SELECT * FROM gallery2 WHERE topic_id="1428336" UNION SELECT * FROM gallery2 WHERE topic_id="1420341" UNION SELECT * FROM gallery2 WHERE topic_id="1610684" UNION SELECT * FROM gallery2 WHERE topic_id="874750" UNION SELECT * FROM gallery2 WHERE topic_id="471852" UNION SELECT * FROM gallery2 WHERE topic_id="1489284" UNION SELECT * FROM gallery2 WHERE topic_id="1432958" UNION SELECT * FROM gallery2 WHERE topic_id="1720794" UNION SELECT * FROM gallery2 WHERE topic_id="1691318" UNION SELECT * FROM gallery2 WHERE topic_id="1717682" UNION SELECT * FROM gallery2 WHERE topic_id="543026" UNION SELECT * FROM gallery2 WHERE topic_id="219462" UNION SELECT * FROM gallery2 WHERE topic_id="599150" UNION SELECT * FROM gallery2 WHERE topic_id="428178"