instruction:
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.
question:
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.
answer:
What is the first name of the person who sends his envoy to secure diamonds?


question:
Passage: In the 19th century the Russian Empire, then including Latvia, was home to about five million Jews, the largest Jewish community in the world at the time. Subjected to religious persecution and violent pogroms, many emigrated, and between 1875 and 1914 around 120,000 arrived in the United Kingdom, mostly in England. The influx reached its peak in the late 1890s when large numbers of Jewish immigrants—mostly poor and semi-skilled or unskilled—settled in the East End of London; the concentration of Jews in some areas of London was almost 100 per cent of the population. Because of the influx of Jews and Russians into one part of Tottenham in North London, the area gained the nickname Little Russia.Some of the expatriates were revolutionaries, and many were unable to adapt to life in London. The social historian William J. Fishman writes that "the meschuggena (crazy) Anarchists were almost accepted as part of the East End landscape"; the terms "socialist" and "anarchist" had been conflated by the British press to refer generally to those with revolutionary beliefs.Several revolutionary factions were active in East and North London. One tactic often employed by revolutionaries in Russia was the expropriation of private property to fund radical activities. The influx of émigrés, and the associated rising rates of violent crime, led to widespread concerns and press coverage. As a result, the British government passed the Aliens Act 1905 in an attempt to reduce immigration. The popular press reflected the opinions of many; a leading article in the Manchester Evening Chronicle supported the bill to bar "the dirty, destitute, diseased, verminous and criminal foreigner who dumps himself on our soil". The journalist Robert Winder, in his examination of immigration into Britain, opines that the Act "gave official sanction to xenophobic reflexes which might ... have remained dormant".
answer:
What is the name of the act that was passed after the influx of émigrés, and the associated rising rates of violent crime?


question:
Passage: In 2004, Audioslave was among the nominees for the 46th Grammy Awards: "Like a Stone" was nominated for "Best Hard Rock Performance" and Audioslave for "Best Rock Album." They spent the rest of 2004 on break from touring and working on the second album. This gave Morello time to concentrate on his solo project, The Nightwatchman, and also to take an active part in political activities. Cornell had time to focus on his personal life; after his divorce from his first wife was finalized, he married Vicky Karayiannis, a Paris-based publicist he met during Audioslave's first European tour.Work on a new album had started in 2003 during the Lollapalooza tour, and continued at the end of the year when band members entered the studio. Aside from writing new material, the band also had some leftover songs from the Audioslave sessions; according to Morello, they had "almost another album's worth of stuff [already done]." "Be Yourself", the first single from the still-untitled album, was panned by some critics, who felt it was "limp, and the lyrics are bland and directionless." Nevertheless, it reached number one on the Mainstream and Modern Rock charts.
In April 2005, the band launched a club tour, which lasted until late May. Although on previous tours Audioslave occasionally played cover songs, they deliberately avoided playing their former bands' songs to avoid using those songs as a "crutch" to "help sell and break Audioslave" as their aim was to establish the band as an "independent entity." After achieving that goal, they thought it was "time to own those histories," and began performing a selection of the two bands' most popular songs (such as "Black Hole Sun" and "Bulls on Parade") on the tour.The second single, "Your Time Has Come" was released through a unique promotion, lasting one week, which involved radio listeners around the world. Radio stations were asked to post a link on their websites to a special timed-out download of the song. Once one million people clicked on the link, the song was unlocked and became downloadable by all one million.
answer:

What is the title of the single that was unlocked and became downloadable by all once one million people clicked on the link?