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.
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Question: Passage: A man unveils a valuable painting he picked up for $50,000 and is killed. A card with a large black ace (of spades) is put on his chest. Another "Black Ace" victim. The killer sends his victims a Black Ace card, warning them they are to die and then kills them, his way of taunting the police. Neil Broderick, an author, intends writing a book about him and is on his way to see Thornton Drake to get more information about him. Austin Winters is his secretary and Neil met his daughter Martha on the train, on the way to Chicago.
Drake has just received a Black Ace, with the words: "At seven tomorrow night", the time he is to be killed. Two plainclothes cops arrive from police headquarters, having had a call, Clancy and Dugan (both incompetents). Martha suggests that they leave for Drake's Louisiana plantation tomorrow morning and be far away from there at seven tomorrow night. Drake agrees and suggests they all go. On the flight, the lights go off for some seconds and when they come on again, Austin Winters is dead without a mark on him.
At the plantation, Clancy ineptly questions the suspects till Neil points out that they are now in another state, so out of their jurisdiction. Neil goes to another room and makes a phone call, then signals to someone outside. After he finishes his call, the line is cut. Meanwhile one of the pilots has taken off in the plane, leaving the other pilot, Henderson, behind who claims he does not know anything though he was out of the cockpit when Winters was killed.
The coroner finds a letter on the dead man which is to be read if Winters dies. It will reveal the identity of the Black Ace. Clancy starts reading it aloud and unsurprisingly the lights go off and the letter has vanished when the lights are turned on again. People locked in their rooms that night and Neil has a hidden car outside signal to him.

Answer: Who is Neil Broderick writing a book about?


Question: Passage: By the 1920s, Baylis concluded that the Old Vic no longer sufficed to house both her theatre and her opera companies. She noticed the empty and derelict Sadler's Wells theatre in Rosebery Avenue, Islington, on the other side of London from the Old Vic.  She sought to run it in tandem with her existing theatre.Baylis made a public appeal for funds in 1925.  With the help of the Carnegie Trust and many others, she acquired the freehold of Sadler's Wells. Work started on the site in 1926.  By Christmas 1930, a completely new 1,640-seat theatre was ready for occupation. The first production there, a fortnight's run from 6 January 1931, was Shakespeare's Twelfth Night. The first opera, given on 20 January, was Carmen. Eighteen operas were staged during the first season.The new theatre was more expensive to run than the Old Vic, as a larger orchestra and more singers were needed, and box office receipts were at first inadequate. In 1932, the Birmingham Post commented that the Vic-Wells opera performances did not reach the standards of the Vic-Wells Shakespeare productions. Baylis strove to improve operatic standards, while at the same time fending off attempts by Sir Thomas Beecham to absorb the opera company into a joint enterprise with Covent Garden, where he was in command.  At first, the apparent financial security of the offer appeared attractive, but friends and advisers such as Edward J. Dent and Clive Carey convinced Bayliss that it was not in the interests of her regular audience. This view received strong support from the press; The Times wrote:
The Old Vic began by offering opera of some sort to people who hardly knew what the word meant ... under a wise, fostering guidance it has gradually worked upwards ...Any kind of amalgamation which made it the poor relation of the 'Grand' season would be disastrous.

Answer: What is the name of the existing theatre Baylis sought to run in tandem with Sadler's Wells theatre?


Question: Passage: It is not clear why, in 1873, Alkan decided to emerge from his self-imposed obscurity to give a series of six Petits Concerts at the Érard piano showrooms. It may have been associated with the developing career of Delaborde, who, returning to Paris in 1867, soon became a concert fixture, including in his recitals many works by his father, and who was at the end of 1872 given the appointment that had escaped Alkan himself, Professor at the Conservatoire. The success of the Petits Concerts led to them becoming an annual event (with occasional interruptions caused by Alkan's health) until 1880 or possibly beyond. The Petits Concerts featured music not only by Alkan but of his favourite composers from Bach onwards, played on both the piano and the pédalier, and occasionally with the participation of another instrumentalist or singer. He was assisted in these concerts by his siblings, and by other musicians including Delaborde, Camille Saint-Saëns, and Auguste Franchomme.Those encountering Alkan at this phase included the young Vincent d'Indy, who recalled Alkan's "skinny, hooked fingers" playing Bach on an Érard pedal piano: "I listened, riveted to the spot by the expressive, crystal-clear playing." Alkan later played Beethoven's Op. 110 sonata, of which d'Indy said: "What happened to the great Beethovenian poem ... I couldn't begin to describe – above all in the Arioso and the Fugue, where the melody, penetrating the mystery of Death itself, climbs up to a blaze of light, affected me with an excess of enthusiasm such as I have never experienced since. This was not Liszt—perhaps less perfect, technically—but it had greater intimacy and was more humanly moving ..."The biographer of Chopin, Frederick Niecks, sought Alkan for his recollections in 1880 but was sternly denied access by Alkan's concierge – "To my ... enquiry when he could be found at home, the reply was a ... decisive 'Never'." However, a few days later he found Alkan at Érard's, and Niecks writes of their meeting that "his reception of me was not merely polite but most friendly.".

Answer:
What is the name of the person given the appointment of Professor at the Conservatoire?