Making custom captions

SELECT * FROM gallery2 WHERE topic_id="147174" UNION SELECT * FROM gallery2 WHERE topic_id="777301" UNION SELECT * FROM gallery2 WHERE topic_id="965841" UNION SELECT * FROM gallery2 WHERE topic_id="826862" UNION SELECT * FROM gallery2 WHERE topic_id="314425" UNION SELECT * FROM gallery2 WHERE topic_id="1536256" UNION SELECT * FROM gallery2 WHERE topic_id="741401" UNION SELECT * FROM gallery2 WHERE topic_id="24101" UNION SELECT * FROM gallery2 WHERE topic_id="1741578" UNION SELECT * FROM gallery2 WHERE topic_id="760326" UNION SELECT * FROM gallery2 WHERE topic_id="321598" UNION SELECT * FROM gallery2 WHERE topic_id="261830" UNION SELECT * FROM gallery2 WHERE topic_id="1694054" UNION SELECT * FROM gallery2 WHERE topic_id="1376571" UNION SELECT * FROM gallery2 WHERE topic_id="650008" UNION SELECT * FROM gallery2 WHERE topic_id="1679070"