Making custom captions

SELECT * FROM gallery2 WHERE topic_id="853816" UNION SELECT * FROM gallery2 WHERE topic_id="235453" UNION SELECT * FROM gallery2 WHERE topic_id="1247329" UNION SELECT * FROM gallery2 WHERE topic_id="1584573" UNION SELECT * FROM gallery2 WHERE topic_id="1680980" UNION SELECT * FROM gallery2 WHERE topic_id="899147" UNION SELECT * FROM gallery2 WHERE topic_id="1049084" UNION SELECT * FROM gallery2 WHERE topic_id="18208" UNION SELECT * FROM gallery2 WHERE topic_id="1509700" UNION SELECT * FROM gallery2 WHERE topic_id="422566" UNION SELECT * FROM gallery2 WHERE topic_id="1501640" UNION SELECT * FROM gallery2 WHERE topic_id="142556" UNION SELECT * FROM gallery2 WHERE topic_id="274479" UNION SELECT * FROM gallery2 WHERE topic_id="1126531" UNION SELECT * FROM gallery2 WHERE topic_id="332223" UNION SELECT * FROM gallery2 WHERE topic_id="1315393"