For all movies where users left a critic, find the movie name, user, rating and critics comments from the user.
movies where users left a critic refers to critic IS NOT NULL; critic comments refers to critic;
SELECT T2.movie_title, T1.user_id, T1.rating_score, T1.critic FROM ratings AS T1 INNER JOIN movies AS T2 ON T1.movie_id = T2.movie_id WHERE T1.critic IS NOT NULL