Potential

SELECT * FROM gallery2 WHERE topic_id="56004" UNION SELECT * FROM gallery2 WHERE topic_id="1207929" UNION SELECT * FROM gallery2 WHERE topic_id="169112" UNION SELECT * FROM gallery2 WHERE topic_id="602908" UNION SELECT * FROM gallery2 WHERE topic_id="1083079" UNION SELECT * FROM gallery2 WHERE topic_id="1197649" UNION SELECT * FROM gallery2 WHERE topic_id="873279" UNION SELECT * FROM gallery2 WHERE topic_id="1219009" UNION SELECT * FROM gallery2 WHERE topic_id="784435" UNION SELECT * FROM gallery2 WHERE topic_id="1223675" UNION SELECT * FROM gallery2 WHERE topic_id="1583876" UNION SELECT * FROM gallery2 WHERE topic_id="159969" UNION SELECT * FROM gallery2 WHERE topic_id="338356" UNION SELECT * FROM gallery2 WHERE topic_id="1142290" UNION SELECT * FROM gallery2 WHERE topic_id="895723" UNION SELECT * FROM gallery2 WHERE topic_id="397825"