You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "What direct-to-films series features Batman: The Killing Joke?" whose answer is DC Universe Animated Original Movies.
Each document should contain about 30 words, and these documents should contain useful information.

Query: direct-to-film series for Batman: The Killing Joke animated film
Useful Output:

Doc 1: The Killing Joke is almost tatilor-made for the film medium. It's short, and it reads like the storyboards for a movie. And yes, it could be a
Doc 2: The DC Universe Animated Original Movies are a series of American direct-to-video superhero animated films based on DC Comics characters and stories.
Doc 3: Batman: The Animated Series ; The Animated Batman Movie You Didn't Know Was A Prequel To The Dark Knight. 4/22/2025; by Devin Meenan; Slash Film ; The 10 Best
Doc 4: Batman: The Killing Joke (Direct to DVD/Blu-ray Animated Film)  #1. Pic. batman-the-killing-joke.jpg. Trailer. Galactus123. Proud Member.
Doc 5: It's been rumored and now it's official. The new direct-to-video animated adaptation of 'Batman: The Killing Joke' has been stamped with an