text: SELECT MIN(k.keyword) AS movie_keyword,
         MIN(n.name) AS actor_name,
         MIN(t.title) AS hero_movie
  FROM cast_info AS ci,
       keyword AS k,
       movie_keyword AS mk,
       name AS n,
       title AS t
  WHERE k.keyword IN ('superhero',
                      'sequel',
                      'second-part',
                      'marvel-comics',
                      'based-on-comic',
                      'tv-special',
                      'fight',
                      'violence')
    AND n.name LIKE '%Downey%Robert%'
    AND t.production_year > 2014
    AND k.id = mk.keyword_id
    AND t.id = mk.movie_id
    AND t.id = ci.movie_id
    AND ci.movie_id = mk.movie_id
    AND n.id = ci.person_id;
  
  