[OC] You could see so much more... :)

SELECT * FROM gallery2 WHERE topic_id="721018" UNION SELECT * FROM gallery2 WHERE topic_id="1316364" UNION SELECT * FROM gallery2 WHERE topic_id="1101655" UNION SELECT * FROM gallery2 WHERE topic_id="922152" UNION SELECT * FROM gallery2 WHERE topic_id="1440822" UNION SELECT * FROM gallery2 WHERE topic_id="1628245" UNION SELECT * FROM gallery2 WHERE topic_id="914445" UNION SELECT * FROM gallery2 WHERE topic_id="243186" UNION SELECT * FROM gallery2 WHERE topic_id="1589248" UNION SELECT * FROM gallery2 WHERE topic_id="368121" UNION SELECT * FROM gallery2 WHERE topic_id="803907" UNION SELECT * FROM gallery2 WHERE topic_id="1223944" UNION SELECT * FROM gallery2 WHERE topic_id="1209678" UNION SELECT * FROM gallery2 WHERE topic_id="1028016" UNION SELECT * FROM gallery2 WHERE topic_id="547097" UNION SELECT * FROM gallery2 WHERE topic_id="1072530"