Train me good

SELECT * FROM gallery2 WHERE topic_id="1609400" UNION SELECT * FROM gallery2 WHERE topic_id="336462" UNION SELECT * FROM gallery2 WHERE topic_id="1326963" UNION SELECT * FROM gallery2 WHERE topic_id="378150" UNION SELECT * FROM gallery2 WHERE topic_id="432147" UNION SELECT * FROM gallery2 WHERE topic_id="1293234" UNION SELECT * FROM gallery2 WHERE topic_id="847320" UNION SELECT * FROM gallery2 WHERE topic_id="4896" UNION SELECT * FROM gallery2 WHERE topic_id="1757223" UNION SELECT * FROM gallery2 WHERE topic_id="1200743" UNION SELECT * FROM gallery2 WHERE topic_id="891607" UNION SELECT * FROM gallery2 WHERE topic_id="308650" UNION SELECT * FROM gallery2 WHERE topic_id="275596" UNION SELECT * FROM gallery2 WHERE topic_id="581636" UNION SELECT * FROM gallery2 WHERE topic_id="649663" UNION SELECT * FROM gallery2 WHERE topic_id="1041730"