[Ch10c] Creating a longer stream operation for filter map filter

    List<String> result = allSongs.stream()

                                  .filter(song -> song.getTitle().equals(songTitle))

                                  .map(Song::getArtist)

                                  .filter(artist -> !artist.equals("The Beatles"))

                                  .collect(toList());

    System.out.println("result = " + result);