Extract the answer to the following question from the movie plot. If the question isn't answerable, please output "Can't answer". Question: An old enemy knows that who is in London? Title: Great Expectations Movie plot: An orphan, Phillip "Pip" Pirrip (Anthony Wager), lives with his shrewish older sister and her kind-hearted blacksmith husband, Joe Gargery (Bernard Miles). One day, Pip runs into an escaped convict, Abel Magwitch (Finlay Currie). Magwitch intimidates the boy into getting him some food and a file for his chains. However, the man is caught when he attacks another escapee he hates and is taken back to prison.Later, Miss Havisham (Martita Hunt), a rich, aloof spinster arranges to have the boy come to her mansion regularly, to provide her company and to play with a cruel but beautiful teenage girl, Estella (Jean Simmons). Estella mocks Pip's coarse manners at every opportunity, but Pip quickly falls in love with her. Once, he meets one of Miss Havisham's relations, Herbert Pocket (John Forrest), a boy about his age. Pip also bumps into Mr. Jaggers (Francis L. Sullivan), Miss Havisham's lawyer. The visits come to an end when Pip turns 14 and begins his apprenticeship as a blacksmith. Estella leaves also, to learn to become a lady.Six years later, Mr. Jaggers shows up and tells him that a mysterious benefactor has offered to turn Pip (played as an adult by John Mills) into a gentleman, one with "great expectations". Pip naturally assumes that it is Miss Havisham. He is taken to London where Mr. Jaggers arranges for Pip to stay with a grownup Herbert Pocket, who will teach him how to behave like a gentleman. From Herbert, Pip learns that Miss Havisham is embittered and her mind warped at being left at the altar many years ago; she is determined to avenge herself against all men, and Estella is to be her instrument of vengeance, a heartless creation to break men's hearts. Pip refuses to believe it.After Pip turns 21, a visit from Joe Gargery shows that Pip has become a snob, as evidenced by his ill-concealed irritation at Joe's clumsy manners. Joe brings a request from Miss Havisham to see her. There he is delighted to be reunited with Estella (Valerie Hobson), though she warns him point-blank, "You must know, Pip, I...
The answer to this question is:
There is no mention of London in this plot overview.