In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.

Example input: Passage: Nearing London, Oliver encounters Jack Dawkins, a pickpocket more commonly known by the nickname the "Artful Dodger", and his sidekick, a boy of a humorous nature named Charley Bates, but Oliver's innocent and trusting nature fails to see any dishonesty in their actions. The Dodger provides Oliver with a free meal and tells him of a gentleman in London who will "give him lodgings for nothing, and never ask for change". Grateful for the unexpected assistance, Oliver follows the Dodger to the "old gentleman's" residence. In this way Oliver unwittingly falls in with an infamous Jewish criminal known as Fagin, the gentleman of whom the Artful Dodger spoke. Ensnared, Oliver lives with Fagin and his gang of juvenile pickpockets in their lair at Saffron Hill for some time, unaware of their criminal occupations. He believes they make wallets and handkerchiefs.
Example output: Who believes Fagin's gang make wallets and handkerchiefs?.
Example explanation: This question is based on the following sentence in the passage "He believes they make wallets and handkerchiefs". It evaluates the understanding that the pronoun "he" refers to name "Oliver". You can ask questions like this one about most pronouns in a paragraph.
Q: Passage: In modern-day San Francisco, reporter Daniel Molloy interviews Louis de Pointe du Lac, who claims to be a vampire. Louis describes his human life as a wealthy plantation owner in 1791 Spanish Louisiana. Despondent following the death of his wife and infant child, one night he is attacked by the vampire Lestat de Lioncourt while drunkenly wandering the waterfront of New Orleans. Lestat senses Louis' dissatisfaction with life and offers to turn him into a vampire, which Louis accepts. However, he quickly comes to regret it. While Lestat revels in the hunt and killing of humans, Louis resists killing them, drinking animal blood to sustain himself. He is disgusted by Lestat's pleasure in killing and comes to suffer tremendously as a vampire.
Wandering the streets of New Orleans, amid an outbreak of plague, Louis can resist his hunger no more and feeds on a little girl whose mother has died in the plague. To entice Louis to stay with him, Lestat turns the dying girl, Claudia, into a vampire. Together they raise her as a daughter—Louis has a pure love for Claudia, while Lestat treats her more as a student, training her to become a merciless killer.  As thirty years pass, Claudia matures psychologically but still remains a little girl in appearance, and she is treated as such by Lestat. When she finally realizes that she will never grow old, she is furious with Lestat and tells Louis that they should leave him. She tricks Lestat into drinking the "dead blood" of twin boys that she killed by overdosing them with laudanum and she slits his throat. With Louis's help, she dumps Lestat's body in a swamp and the two plan a voyage to Europe. However, Lestat returns on the night of their departure, having drunk the blood of swamp creatures to survive. Lestat attacks them, but Louis sets him on fire and, in the ensuing blaze, they are able to escape to their ship and depart.
A:
Who overdosed somebody with laudanum?