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.

Input: Consider Input: Passage: As a result of the Berlin Conference of 1884-1885, the Congo Basin is claimed by King Leopold II of the Belgians, who rules the Congo Free State in personal union with the Kingdom of Belgium. The country is on the verge of bankruptcy, Leopold having borrowed huge sums of money to finance the construction of railways and other infrastructure projects. He sends his envoy Léon Rom to secure the fabled diamonds of Opar. Rom's expedition is ambushed and massacred. A tribal leader, Chief Mbonga, offers Rom the diamonds in exchange for an old enemy: Tarzan.
The man once called "Tarzan", John Clayton III, has left Africa behind and settled down in London with his American-born wife, Jane Porter. He took up his birth name and ancestral family residence as Lord Greystoke. In the eight years since returning from Africa, John's story as Tarzan has become legendary among the Victorian public, although John wants to leave that past behind. Through the British Prime Minister, John is invited by King Leopold to visit Boma and report on the development of the Congo by Belgium; he declines to participate in the perceived publicity stunt.

Output: What is the first name of the person who sends his envoy to secure diamonds?


Input: Consider Input: Passage: In 1916, childhood best friends, Bob Wilson and Fred von Bergen, are test pilots working for an American company that builds bombers for the European allies. Since he is German-born and faces prejudice against his heritage, Fred loses his job and, unable to find other employment, decides to return to Germany to fight for his homeland. Although he has no special attachment to the German cause, Bob quits the aviation company and joins his friend in Germany. 
On their way to a German airfield, Red Cross nurse Alida Hoffman accidentally runs Bob and Fred off the road, Both men are immediately drawn to Alida, especially Bob although Fred is more shy. After Bob's first unsuccessful mission, Captain Wolters, the squadron's tyrannical leader, expresses his doubt about his loyalty but, desperate for pilots, gives him another chance. 
As the United States is drawn into the war, instead of sending him into a crucial air battle, Wolters arrests Bob. Fred, heartbroken that Alida has chosen Bob, quarrels with his friend, calling him a coward. Later, however, Fred allows his friend to escape from a firing squad and flee to the Allied lines. 
To prove his allegiance, Bob leads British bombers to the German base, while Fred is told by Wolters that he must shoot down Bob to prove his loyalty. Neither man is capable of killing the other, and, in the end, Fred sacrifices his life for Bob. After the war, Bob returns to Germany to marry Alida. The newly married couple then returns to the United States, and pay their respects to Fred's mother.

Output: What is the first name of the man that is fired for being German-born?


Input: Consider Input: Passage: Work on the steel structure of the RCA Building started in March 1932. Meanwhile, the British and French governments had already agreed to occupy the first two internationally themed buildings, and John Rockefeller Jr. started signing tenants from the respective countries. The cornerstone of the British Empire Building was laid in June, when Francis Hopwood, 1st Baron Southborough, placed the symbolic first stone in a ceremony. Significant progress on the theaters had been made by then: RKO Roxy's brickwork had been completed and the limestone-and-granite facade was almost ready to be installed, while the Music Hall's steelwork was complete. By September, both theaters were almost finished, as was the RCA Building, whose structural steel was up to the 64th floor. That month also saw the opening of the RKO Building, the first structure in the complex to be opened. The British Empire Building's structural steel started construction in October.The Music Hall was the second site to open, on December 27, 1932, although it had topped out in August. This was followed by the RKO Roxy's opening two days later. Roxy originally intended to use the Music Hall as a vaudeville theater, but the opening of the Music Hall was widely regarded as a flop, and both theaters ended up being used for films and performing arts. Radio City's Roxy Theatre had to be renamed the Center Theatre in May 1933 after a lawsuit by William Fox, who owned the original Roxy Theatre on 50th Street. The failure of the vaudeville theater ended up ruining Roxy's enterprise, and he was forced to resign from the center's management in January 1934.The cornerstone of La Maison Francaise was laid on April 29, 1933, by former French prime minister Édouard Herriot. The British Empire Building was open less than a week later. The RCA Building was slated to be open by May 1, but was delayed because of controversy over the Man at the Crossroads mural in the lobby. In July 1933, the managers opened a 70th-story observation deck atop the RCA Building, It was a great success: the 40-cents-per-head observation deck saw 1,300 daily visitors by late 1935.Work on the rooftop gardens started in October 1933, and La Maison Francaise opened the same month. In December 1933, workers erected the complex's famed Christmas tree in the center of the plaza for the first time. Since then, it has been a yearly tradition to display a large Christmas tree at the plaza between November and January.Simultaneously, the city built the part of the canceled "Metropolitan Avenue" that ran through Rockefeller Center. The new street, called "Rockefeller Plaza", was projected to carry an estimated 7,000 vehicles per day upon opening. The first segment, between 49th and 50th streets, opened in 1933, and a northern extension opened in 1934. The new street measured over 60 feet (18 m) wide and ran 722 feet (220 m) through the complex, with four vehicular levels.


Output: What are the names of the theaters that ended up being used for films and performing arts?