3 against 1

SELECT * FROM gallery2 WHERE topic_id="904747" UNION SELECT * FROM gallery2 WHERE topic_id="1643144" UNION SELECT * FROM gallery2 WHERE topic_id="673844" UNION SELECT * FROM gallery2 WHERE topic_id="630878" UNION SELECT * FROM gallery2 WHERE topic_id="715932" UNION SELECT * FROM gallery2 WHERE topic_id="1623594" UNION SELECT * FROM gallery2 WHERE topic_id="951064" UNION SELECT * FROM gallery2 WHERE topic_id="1131033" UNION SELECT * FROM gallery2 WHERE topic_id="460933" UNION SELECT * FROM gallery2 WHERE topic_id="1398924" UNION SELECT * FROM gallery2 WHERE topic_id="917535" UNION SELECT * FROM gallery2 WHERE topic_id="1448378" UNION SELECT * FROM gallery2 WHERE topic_id="1016959" UNION SELECT * FROM gallery2 WHERE topic_id="1075200" UNION SELECT * FROM gallery2 WHERE topic_id="1379777" UNION SELECT * FROM gallery2 WHERE topic_id="1727448"