Here is an example of a long line from the script for the movie "The Dark Knight":
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Batman: I'm not a hero, I'm a silent guardian, a watchful protector, a Dark Knight.
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This long line helps to create a sense of mystery and intrigue around the character of Batman. It also emphasizes the fact that Batman is not a traditional superhero, but rather a vigilante who operates outside the law.
Long lines can be a powerful tool for screenwriters, but they should be used sparingly. Too many long lines can make a script difficult to read and understand. It is important to use them judiciously to create the desired effect.