Problem: Generate a question that has the following answer: The Alchemist for the following movie plot: In 19th century Paris, the famed detective Vidocq (Gerard Depardieu) disappears while pursuing a murderer called the Alchemist. Etienne Boisset (Guillaume Canet), a young biographer of Vidocq's, follows in his footsteps and progressively uncovers Vidocq's investigations. He learns how Vidocq was first called in to investigate a series of assassinations by lightning, which led him to pursue the Alchemist. Etienne discovers that the Alchemist is a wizard of sorts who wears a mirrored mask and kills virgins to maintain eternal youth. Even the sex of the Alchemist is a mystery, because it sometimes utters mocking feminine sighs during combat with Vidocq. Etienne probes deeper into Vidocq's investigations and eventually comes to learn that the Alchemist uses virgin blood to make magical mirrors that consume human souls. At last, Etienne comes to the end of his trail and discovers Vidocq alive and in hiding. Etienne dons a mirrored mask and reveals himself to be the Alchemist. Vidocq has known all along, however, and is ready to fight his nemesis. During their final confrontation, Vidocq defeats the Alchemist, but the end of the film suggests that the Alchemist survives.

A: What is the name of the murderer that Vidocq is pursuing?
Problem: Given the question: Generate a question that has the following answer: China for the following movie plot: An on-screen . title sets the action in China, 1951. The film tells the story of a young boy, Manuk, who roams a seemingly deserted town to glean and recycle the debris of war. We first meet him in the wreck of an aeroplane, looking for a particular piece of war refuse a bolt to turn into a toy soldier for his collection. He sings a song about a bear. Upon hearing the unmistakable low whistle of a train in the distance he runs to the track and places the bolt on the rail. The train thunders past on its urgent mission to carry tanks to the front. Manuk stands mesmerised, and grins widely. Once the train has passed he retrieves the bolt which has become magnetised. He makes his way through the town, pretending to be a soldier engaged in house-to-house fighting, until his attention is captured by the drone of aeroplane engines. Silently he watches them slowly cross the sky. His war game begins again as he crouches behind rocks on a ridge overlooking an area with houses jumbled together. A postman cycles down the road below Manuk's hiding place. Manuk imagines he is with his dad, pinned down by enemy fire. "Dad, there are too many of them," he cries as the sound of machine guns and artillery fire fill his head. "But we are braver than them," his father replies in the game. Manuk picks up a rock as if it is a hand grenade, expertly pulls the pin with his teeth and hurls it at the enemy crying "Dad, get down!" He waits, crouched, fingers in ears for the explosion which never comes. Instead we hear the postman cry in surprise and pain, before crashing his bicycle and shouting at his unseen tormentor. Manuk slinks away, and climbs the hill towards his home. He takes a key from a special hiding spot, and approaches the verandah in front of his house. He notices a parcel, and hurries to open it. He pulls out an old leather wallet containing a faded black and white photograph of a man crouching with a child dressed as Manuk is now, but much younger. Manuk gently caresses the photograph with his...
++++++++++++++++++++++++++++++++
The answer is:
When does this film take place?
[Q]: Generate a question that has the following answer: Joker, Penguin, Riddler, and Catwoman for the following movie plot: When Batman and Robin get a tip that Commodore Schmidlapp is in danger aboard his yacht, they launch a rescue mission using the batcopter. As Batman descends on the bat-ladder to land on the yacht it suddenly vanishes beneath him. He rises out of the sea with a shark attacking his leg. After Batman dislodges it with bat-shark repellant, the shark explodes. Batman and Robin head back to Commissioner Gordon's office, where they deduce that the tip was a set-up by the United Underworld, a gathering of four of the most powerful villains in Gotham City (Joker, Penguin, Riddler, and Catwoman). The United Underworld equip themselves with a dehydrator that can turn humans into dust (an invention of Schmidlapp, who is unaware he has been kidnapped), a submarine made to resemble a penguin, and their three pirate henchmen (Bluebeard, Morgan and Quetch). It is revealed the yacht was really a projection. When The Dynamic Duo return to a buoy concealing a projector, they are trapped on the buoy by a magnet and targeted by torpedoes. They use a radio-detonator to destroy two of the missiles, and a porpoise sacrifices itself to intercept the last one. Catwoman, disguised as Soviet journalist "Miss Kitka", helps the group kidnap Bruce Wayne and pretends to be kidnapped with him, as part of a plot to lure Batman and finish him off with another of Penguin's explosive animals (not knowing that Wayne is Batman's alter-ego). After Wayne escapes captivity, Penguin disguises himself as the Commodore and schemes his way into the Batcave along with five dehydrated henchmen. This plan fails when the henchmen unexpectedly disappear into antimatter once struck: Penguin mistakenly rehydrated them with toxic heavy water, used to recharge the Batcave's atomic pile. Ultimately the Duo are unable to prevent the kidnapping of the dehydrated United World Organization's Security Council. Giving chase in the batboat to retrieve them (and Miss Kitka, presumed by the duo as still captive), Robin uses a sonic charge weapon to disable Penguin's...
****
[A]:
Who are the antagonists?