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.

[Q]: Passage: Recording sessions for The Joshua Tree began in January 1986 in Danesmoate House in Dublin and continued throughout the year. U2 briefly interrupted these sessions in June to join Amnesty International's A Conspiracy of Hope tour of benefit concerts. Following the first concert in San Francisco, lead singer Bono met Rene Castro, a Chilean mural artist. Castro had been tortured and held in a concentration camp for two years by the dictatorial Chilean government because his artwork criticised the Pinochet-led regime that seized power in 1973 during a coup d'etat. Castro showed Bono a wall painting in the Mission District that depicted the ongoing plight in Chile and Argentina. He also learned of the Madres de Plaza de Mayo, a group of women whose children were forcibly disappeared by the Argentine government. The Madres' children were students who had opposed the government during the Dirty War, and the coup d'etat that brought Jorge Rafael Videla to power. The Madres joined together to campaign for information regarding the locations of their children's bodies and the circumstances of their deaths, believing them to have been kidnapped, tortured, and murdered.Inspired by the mural, Bono took an extended break from recording into July, traveling to Nicaragua and El Salvador with his wife, Alison Hewson, to see first-hand the distress of peasants bullied by political conflicts and US military intervention. While there, they worked with the Central American Mission Partners (CAMP), a human rights and economic development organization. In El Salvador they met members of the Comite de Madres Monsignor Romero (COMADRES: Committee of the Mothers Monsignor Romero), an organization of women whose children were forcibly disappeared by the Salvadoran government during the Civil War because they opposed the military regime that was in power. At one point during the trip, Bono, Alison, and a member of CAMP were shot at by government troops while on their way to deliver aid to a group of farmers. The shots were a warning and, according to author John Luerssen, the incident made Bono realize that "they didn't care for their intrusion and they could kill them if they felt compelled."In 2006, Bono recounted another experience he had in El Salvador, where he had seen a body thrown from a van into the road. He remarked, "People would just disappear. If you were part of the opposition, you might find an SUV with the windows blacked out parked outside your house.... If that didn't stop you, occasionally they would come in and take you and murder you; there would be no trial." Bono understood the cause of the Madres and COMADRES and wanted to pay tribute to it. His experiences in Central America inspired the lyrics of "Mothers of the Disappeared" and another track from The Joshua Tree, "Bullet the Blue Sky".
[A]: What is the first name of the person whose artwork criticized the Pinochet-led regime that seized power in 1973?

[Q]: Passage: In a positive review of the song, Robert Copsey of Digital Spy gave it four out of five stars and praised Rihanna's direction towards a "softer and more prolific edge". Brittany Lewis of GlobalGrind called "Diamonds" a catchy song and felt that it had the potential to be another hit for Rihanna. Glenn Gamboa of Newsday said that, although it does not sound like an emphatic hit, the lyrical content of the song depicts a "personal shift" for Rihanna. According to James Montgomery of MTV News, "Diamonds" is more positive than previous singles such as "We Found Love" and "Where Have You Been", despite its moderate tempo. Lindsey DiMattina of Hollywood.com said that Rihanna's singing is stronger than ever. Contactmusic's reviewer described it as a "laid-back track", and suggested that the lyrical content is related to her former boyfriend Chris Brown. In a track-by-track review of Unapologetic, Andrew Hampp of Billboard found the song inspiring and commented that it "finds Rihanna doing one of her throatiest, most impassioned vocals to date". Andy Kellman of Allmusic cited the song as one of the highlights on Unapologetic, and gave it three and a half stars.In a less enthusiastic critique, Jon Caramanica of The New York Times likened "Diamonds" to a James Bond movie theme song, but with "insipid lyrics". Jim Farber of the New York Daily News felt that the song is not as evocative as it attempts to be and lacks the sense of mystery and engaging production found on "We Found Love". Kevin Blair of the Irish Independent's, Independent Woman, was critical of the song for deviating from Rihanna's previous dance and R&B songs and dismissed it as a "chugging, faintly misty-eyed, middle of the road pop song". Chris Richards of The Washington Post panned the song as a "power ballad without much power".
[A]: What is the name of the track described as "laid-back" by Contactmusic's reviewer?

[Q]: Passage: Buckton was a small highland enclosure castle with a 2.8-metre-thick (9 ft) sandstone curtain wall; nothing survives above ground. It is roughly oval and measures 35.6 by 26.2 metres (117 by 86 ft), covering an area of 730 square metres (0.18 acres). The castle is surrounded by a 10-metre-wide (33 ft) ditch apart from the south-west part where the steep slope of the hill makes the ditch unnecessary. When the ditch was dug some of the material was used to raise the interior of the castle by 1.5 metres (4 ft 11 in).Buckton is similar in size to Clitheroe Castle's inner enclosure, which is also oval (31.8 by 26 metres (104 by 85 ft)) and has a 2.6-metre-thick (9 ft) curtain wall. Clitheroe was also built on a rocky peak and the small size of its great tower may be due to its naturally defensible position and location in an economically deprived area.Buckton Castle was entered through a gatehouse in the north-west measuring 9.3 by 7.5 metres (31 by 25 ft). The east side was occupied by the gate passage and the west by a chamber. Though the structure no longer survives above ground, it was probably at least two storeys tall. Constructed in the 12th century, Buckton's gatehouse was the earliest in North West England, and was one of six stone gatehouses in the region that were built in the 12th or 13th centuries: Buckton, Egremont, Brough, Clitheroe, Carlisle's inner gatehouse, and the Agricola Tower at Chester. They are broadly similar in size, and take the form of a gate passage piercing a single tower with rooms in the floors above. Buckton's gatehouse differs slightly in having the passage offset to one side.In the 1770s, the antiquarian Thomas Percival recorded a well within the castle, close to the south curtain, and walls of buildings inside the castle still standing to a height of 2 metres (7 ft). A plan created by the Saddleworth Geological Society in 1842 recorded a ruined structure within the castle's south-east area in addition to the well Percival noted. Trenches in the castle's interior did not reveal the structures on the plans from the 18th and 19th centuries, although the discovery of a posthole indicates there was activity in this area. The gap in the southern part of the curtain wall not evident in the 1842 plan by the Saddleworth Geological Society was probably created in the 19th century. There is a feature resembling a spoil heap, consisting of pieces of sandstone. This may have been a by-product from the construction of the castle. Nothing remains of Buckton Castle above ground today, and until the late 20th century, vegetation obscured the existence of a stone structure.
[A]:
What are the exact names of the six stone gatehouses built in North West England in the 12th or 13th centuries?