Table: movie_details_2
Columns: year
film_name
music_director
lyricist
language

Question: What language does Raj Kamal speak?
SQL: SELECT "language" FROM movie_details_2 WHERE "music_director" = 'raj kamal'

Question: What 1972 Hindi film had Ravindra Jain directing the music?
SQL: SELECT "film_name" FROM movie_details_2 WHERE "year" > 1972 AND "language" = 'hindi' AND "lyricist" = 'ravindra jain' AND "music_director" = 'ravindra jain'

Question: What 1979 Hindi film had Ravindra Jain directing music?
SQL: SELECT "film_name" FROM movie_details_2 WHERE "language" = 'hindi' AND "lyricist" = 'ravindra jain' AND "music_director" = 'ravindra jain' AND "year" = 1979