Hard

SELECT * FROM gallery2 WHERE topic_id="1525539" UNION SELECT * FROM gallery2 WHERE topic_id="974344" UNION SELECT * FROM gallery2 WHERE topic_id="1179859" UNION SELECT * FROM gallery2 WHERE topic_id="1717591" UNION SELECT * FROM gallery2 WHERE topic_id="786251" UNION SELECT * FROM gallery2 WHERE topic_id="276570" UNION SELECT * FROM gallery2 WHERE topic_id="1174743" UNION SELECT * FROM gallery2 WHERE topic_id="1273725" UNION SELECT * FROM gallery2 WHERE topic_id="1816512" UNION SELECT * FROM gallery2 WHERE topic_id="694760" UNION SELECT * FROM gallery2 WHERE topic_id="1533276" UNION SELECT * FROM gallery2 WHERE topic_id="729539" UNION SELECT * FROM gallery2 WHERE topic_id="63943" UNION SELECT * FROM gallery2 WHERE topic_id="1060080" UNION SELECT * FROM gallery2 WHERE topic_id="596232" UNION SELECT * FROM gallery2 WHERE topic_id="435518"