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SELECT DISTINCT ON (ra.release)
         created.created, annotation_append(annotation.text)
    FROM annotation,
         (
              SELECT created
                FROM annotation an
                JOIN release_annotation ra ON ra.annotation = an.id
               WHERE ra.release IN (14540, 14541, 14542)
         ) created,
         release_annotation ra
   WHERE ra.annotation = annotation.id
     AND annotation.created <= created.created
     AND ra.release IN (14540,14541,14542)
GROUP BY created.created;