On the trail :)

SELECT * FROM gallery2 WHERE topic_id="720979" UNION SELECT * FROM gallery2 WHERE topic_id="1133809" UNION SELECT * FROM gallery2 WHERE topic_id="163172" UNION SELECT * FROM gallery2 WHERE topic_id="121728" UNION SELECT * FROM gallery2 WHERE topic_id="237395" UNION SELECT * FROM gallery2 WHERE topic_id="495670" UNION SELECT * FROM gallery2 WHERE topic_id="1552688" UNION SELECT * FROM gallery2 WHERE topic_id="881970" UNION SELECT * FROM gallery2 WHERE topic_id="276291" UNION SELECT * FROM gallery2 WHERE topic_id="951186" UNION SELECT * FROM gallery2 WHERE topic_id="1421643" UNION SELECT * FROM gallery2 WHERE topic_id="354705" UNION SELECT * FROM gallery2 WHERE topic_id="1263625" UNION SELECT * FROM gallery2 WHERE topic_id="1285468" UNION SELECT * FROM gallery2 WHERE topic_id="588273" UNION SELECT * FROM gallery2 WHERE topic_id="656679"