I wonder where you start first…

SELECT * FROM gallery2 WHERE topic_id="471038" UNION SELECT * FROM gallery2 WHERE topic_id="157392" UNION SELECT * FROM gallery2 WHERE topic_id="1150191" UNION SELECT * FROM gallery2 WHERE topic_id="858342" UNION SELECT * FROM gallery2 WHERE topic_id="376107" UNION SELECT * FROM gallery2 WHERE topic_id="1047526" UNION SELECT * FROM gallery2 WHERE topic_id="1590819" UNION SELECT * FROM gallery2 WHERE topic_id="314794" UNION SELECT * FROM gallery2 WHERE topic_id="1776360" UNION SELECT * FROM gallery2 WHERE topic_id="1468563" UNION SELECT * FROM gallery2 WHERE topic_id="1816062" UNION SELECT * FROM gallery2 WHERE topic_id="1589844" UNION SELECT * FROM gallery2 WHERE topic_id="982134" UNION SELECT * FROM gallery2 WHERE topic_id="580319" UNION SELECT * FROM gallery2 WHERE topic_id="337572" UNION SELECT * FROM gallery2 WHERE topic_id="377074"