TASK DEFINITION: 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.
PROBLEM: Passage: The siege was captured by Pathé News cameras—one of their earliest stories and the first siege to be captured on film—and it included footage of Churchill in attendance. When the newsreels were screened in cinemas, Churchill was booed with shouts of "shoot him" from audiences. His presence was controversial to many and the Leader of the Opposition, Arthur Balfour, remarked, "He [Churchill] was, I understand, in military phrase, in what is known as the zone of fire—he and a photographer were both risking valuable lives. I understand what the photographer was doing, but what was the right hon. Gentleman doing? That I neither understood at the time, nor do I understand now." Jenkins suggests that he went simply because "he could not resist going to see the fun himself".An inquest was held in January into the deaths at Houndsditch and Sidney Street. The jury took fifteen minutes to reach the conclusion that the two bodies located were those of Svaars and Sokoloff, and that Tucker, Bentley and Choate had been murdered by Gardstein and others in the course of the burglary attempt. Rosen was arrested on 2 February at work in Well Street, Hackney, and Hoffman was taken into custody on 15 February. The committal proceedings spread from December 1910—with Milstein and Trassjonsky appearing—to March 1911, and included Hoffman from 15 February. The proceedings consisted of 24 individual hearings. In February Milstein was discharged on the basis that there was insufficient evidence against her; Hoffman, Trassjonsky and Federoff were released in March on the same basis.The case against the four remaining arrested gang members was heard at the Old Bailey by Mr Justice Grantham in May. Dubof and Peters were accused of Tucker's murder, Dubof, Peters, Rosen and Vassilleva were charged with "feloniously harbouring a felon guilty of murder", and for "conspiring and agreeing together and with others unknown to break and enter the shop of Henry Samuel Harris with intent to steal his goods." The case lasted for eleven days; there were problems with the proceedings because of the language difficulties and the chaotic personal lives of the accused. The case resulted in acquittals for all except Vassilleva, who was convicted of conspiracy in the burglary. She was sentenced to two years' imprisonment; her conviction was later overturned on appeal.After the high levels of criticism aimed at the Aliens Act, Churchill decided to strengthen the legislation, and proposed the Aliens (Prevention of Crime) Bill under the Ten Minute Rule. The MP Josiah C Wedgwood objected, and wrote to Churchill to ask him not to introduce the hard-line measures "You know as well as I do that human life does not matter a rap in comparison with the death of ideas and the betrayal of English traditions." The bill did not become law.

SOLUTION: Which of the people arrested was released first?

PROBLEM: Passage: As the 19th century progressed, the United States government's Indian removal policy pushed Native American tribes west of the Mississippi River.  In 1830, the Indian Removal Act was signed into law, and though that act did not directly address the Potawatomi people of Indiana, it led to several additional treaties that resulted in their removal.  In what came to be known as the Potawatomi Trail of Death, about 860 Potawatomi Indians who had refused to leave were forced to move from Indiana to Kansas.  On September 14, 1838, the group camped near Williamsport, and on September 15 they camped in the southwestern part of the county before moving into Illinois.  Before reaching their destination in Kansas, over 40 of them had died, many of them children; two children died and were buried at the second Warren County campsite.When the county was established, the Wabash River was vital to transportation and shipping.  Zachariah Cicott traded up and down the river, and cities like Attica, Perrysville, Baltimore and Williamsport were founded near the river's banks and flourished because of it.  In the 1840s, the Wabash and Erie Canal began to operate and provided even broader shipping opportunities, but the canal favored towns which were on the "right side" of the river; the canal was on the Fountain County side, and towns like Baltimore dwindled as a result.  Some towns, such as Williamsport and Perrysville, managed to participate in canal traffic through the use of side-cuts that brought traffic from the canal across the river.  When railroads were constructed starting in the 1850s, they in turn began to render the canals obsolete and allowed trade to reach towns that lacked water connections.  The canal continued to be used through the early 1870s.

SOLUTION: What decade did the canals that provided broader shipping opportunities start to decline due to railroads?

PROBLEM: Passage: Victorious at the Battle of Hastings on 14 October 1066, the invading Duke of Normandy, William the Conqueror, spent the rest of the year securing his holdings by fortifying key positions. He founded several castles along the way, but took a circuitous route toward London; only when he reached Canterbury did he turn towards England's largest city. As the fortified bridge into London was held by Saxon troops, he decided instead to ravage Southwark before continuing his journey around southern England. A series of Norman victories along the route cut the city's supply lines and in December 1066, isolated and intimidated, its leaders yielded London without a fight. Between 1066 and 1087, William established 36 castles, although references in the Domesday Book indicate that many more were founded by his subordinates. The new ruling elite undertook what has been described as "the most extensive and concentrated programme of castle-building in the whole history of feudal Europe". They were multi-purpose buildings, serving as fortifications (used as a base of operations in enemy territory), centres of administration, and residences.William sent an advance party to prepare the city for his entrance, to celebrate his victory and found a castle; in the words of William's biographer, William of Poitiers, "certain fortifications were completed in the city against the restlessness of the huge and brutal populace. For he [William] realised that it was of the first importance to overawe the Londoners". At the time, London was the largest town in England; the foundation of Westminster Abbey and the old Palace of Westminster under Edward the Confessor had marked it as a centre of governance, and with a prosperous port it was important for the Normans to establish control over the settlement. The other two castles in London – Baynard's Castle and Montfichet's Castle – were established at the same time. The fortification that would later become known as the Tower of London was built onto the south-east corner of the Roman town walls, using them as prefabricated defences, with the River Thames providing additional protection from the south. This earliest phase of the castle would have been enclosed by a ditch and defended by a timber palisade, and probably had accommodation suitable for William.

SOLUTION:
What is the title of the person who sent an advance party to prepare which city for his entrance?