Write a question about the following article.

Peter and I had big plans yesterday to see The Dark Knight . We 'd tried on my birthday , but the timing had n't worked out . The next weekend , he was away again , this time teaching a group workshop .

Question:
What is the Dark Knight ?
Choose from: * None of the above choices .. * It is a dinner hosted by the black knight. * It is a Batman movie .. * It is a TV series ..