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.

[EX Q]: Passage: Following the seven performances on the Joshua Tree Tour, U2 did not perform "Mothers of the Disappeared" until 1998, on the fourth leg of the PopMart Tour. It was played at three concerts in Argentina and once in Chile, concluding all four shows. Bono sang "el pueblo vencerá" at the end of each performance. The first rendition was on 5 February 1998 in Buenos Aires, where it was performed with the Madres accompanying them onstage. The song was played by just Bono and the Edge and was set against footage of the Madres on the video screen. At the conclusion of the song, the band members faced the Madres and applauded, an act in which the rest of the audience joined. Part of the performance was later included on the television documentary Classic Albums: The Joshua Tree.The cost of the tickets was too high for many fans in South America, so the band broadcast the 11 February concert in Chile live on television. Knowing that many people in the country would be watching, they played "Mothers of the Disappeared" in place of "Wake Up Dead Man". The stadium in which the concert was held had been used as a prison camp by Pinochet's regime following the coup d'état. Again it was performed solely by Bono and the Edge against footage of the Madres, and they invited the women to join them onstage a second time. The Madres held up photographs of their children and spoke about them briefly during the performance, an act which received a mixed reception from the audience. Bono made a plea to Pinochet, asking him to "tell these women where are the bones of their children.""Mothers of the Disappeared" was performed again on the fourth leg of the Vertigo Tour, on 26 February 2006 in Santiago and 2 March in Buenos Aires. Although it was rehearsed by the full band, it was played only by Bono and the Edge in an arrangement similar to the one from the PopMart Tour. The Edge performed the song on a charango that Chilean President Ricardo Lagos had given to Bono earlier that day. It was played at three concerts on the third leg of the U2 360° Tour in place of "MLK". One performance in Istanbul, Turkey was dedicated to Fehmi Tosun, an ethnic Kurd who was kidnapped in October 1995 and subsequently disappeared. The abduction was witnessed by his wife and daughter; no information regarding his disappearance has ever been released.
For the first time in 30 years, a full band arrangement of "Mothers of the Disappeared" returned to U2's live set for the Joshua Tree Tour 2017, on which the group played The Joshua Tree in sequence in its entirety for each show. Eddie Vedder and Mumford & Sons accompanied U2 on-stage in a performance of the song during a 14 May 2017 show in Seattle.
[EX A]: What had "el pueblo vencerá" sung after each performance?

[EX Q]: Passage: Mauna Kea is one of five volcanoes  that form the island of Hawaii, the largest and youngest island of the Hawaiian–Emperor seamount chain. Of these five hotspot volcanoes, Mauna Kea is the fourth oldest and fourth most active. It began as a preshield volcano driven by the Hawaii hotspot around one million years ago, and became exceptionally active during its shield stage until 500,000 years ago. Mauna Kea entered its quieter post-shield stage 250,000 to 200,000 years ago, and is currently dormant. Mauna Kea does not have a visible summit caldera, but contains a number of small cinder and pumice cones near its summit. A former summit caldera may have been filled and buried by later summit eruption deposits.
Mauna Kea is over 32,000 km3 (7,680 cu mi) in volume, so massive that it and its neighbor, Mauna Loa, depress the ocean crust beneath it by 6 km (4 mi).
Mauna Kea is the only Hawaiian volcano with distinct evidence of glaciation. Similar deposits probably existed on Mauna Loa, but have been covered by later lava flows. Despite Hawaii's tropical location, during several past ice ages a drop of a degree in temperature allowed snow to remain at the volcano's summit through summer, triggering the formation of an ice cap. There are three episodes of glaciation that have been recorded from the last 180,000 years: the Pōhakuloa (180–130 ka), Wāihu (80–60 ka) and Mākanaka (40–13 ka) series. These have extensively sculpted the summit, depositing moraines and a circular ring of till and gravel along the volcano's upper flanks. Subglacial eruptions built cinder cones during the Mākanaka glaciation, most of which were heavily gouged by glacial action. The most recent cones were built between 9000 and 4500 years ago, atop the glacial deposits, although one study indicates that the last eruption may have been around 3600 years ago.At their maximum extent, the glaciers extended from the summit down to between 3,200 and 3,800 m (10,500 and 12,500 ft) of elevation. A small body of permafrost, less than 25 m (80 ft) across, was found at the summit of Mauna Kea before 1974, and may still be present. Small gullies etch the summit, formed by rain- and snow-fed streams that flow only during winter melt and rain showers.
[EX A]: What was likely covered by later lava flows on Mauna Loa?

[EX Q]: Passage: "City of Angels" is a synthrock song with influences and elements from experimental music. It opens with an instrumental section and "gently burbling" synthesizers. It follows with the sounds of drum beats, including taiko drums, then transitions into a piano melody. After the first verse, the chorus follows, with Leto singing, "Lost in the City of Angels / Down in the comfort of strangers / I found myself in the fire burned hills / In the land of a billion lights". During the bridge, he ornaments his vocal lines with melodic crescendos, affirming "I am home". After the final chorus, the song reaches a drum-heavy climax. Emily Zemler from Billboard cited "City of Angels" as an example of variety and experimentation in Love, Lust, Faith and Dreams. She described the song as a "pulsating, subtler track that employs a blipping electronic beat rather than the band's usual rock backdrop".In a preview of the record, Jeff Benjamin from Fuse acknowledged the 1980s influences that resonated throughout the track and noted that "hard rock guitars and percussion come crashing in on the chorus." Sarah O' Hara, while reviewing Love, Lust, Faith and Dreams for Lowdown, compared the song to "Kings and Queens", a track with a similar structure included on This Is War featuring sparse verses and slow atmospheric builds to the chorus. In an interview with Loudwire, Leto described "City of Angels" as a very personal song about a specific place. He said, "It's the story of my brother and I going to Los Angeles to make our dreams come true. It's a love letter to that beautiful and bizarre land." Leto later explained that the song could refer to any place a person goes to fulfill his or her own dreams. Mary Ouellette, writing for Loudwire, felt that the song "tells a passionate tale of finding comfort in calling the city of Los Angeles home.".
[EX A]:
What is the last name of the person who described "City of Angels" as a "pulsating, subtler track that employs a blipping electronic beat rather than the band's usual rock backdrop"?