Write a function called display_top_collaborations that displays the ranking of tuples (director, first billed actor (i. e. actor1), and number of movies) for movies in which the director and actor worked together also listed in the top rated movie list. the list should be in descending ordered of the total number of movies that director and that actor worked together. for equal values the order does not matter. limit the output to 7 tuples. notice that the number of movies in the imdb-top-casts. csv file exceeds the number of movies in imdb-top-rated. csv. you may have to open the csv files like this: open(filename, 'r', encoding = 'utf-8'). b) write a function called