State the genre of the movie title with a runtime of only 14 minutes.
genre refers to genre_name; runtime of only 14 minutes refers to runtime = 14
SELECT T3.genre_name FROM movie AS T1 INNER JOIN movie_genres AS T2 ON T1.movie_id = T2.movie_id INNER JOIN genre AS T3 ON T2.genre_id = T3.genre_id WHERE T1.runtime = 14