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: Drake ended his studies at Cambridge nine months before graduation, and in autumn 1969 moved to London. His father remembered "writing him long letters, pointing out the disadvantages of going away from Cambridge ... a degree was a safety net, if you manage to get a degree, at least you have something to fall back on; his reply to that was that a safety net was the one thing he did not want." Drake spent his first few months in London drifting from place to place, occasionally staying at his sister's Kensington flat but usually sleeping on friends’ sofas and floors. Eventually, in an attempt to bring some stability and a telephone into Drake's life, Boyd organised and paid for a ground floor bedsit in Belsize Park, Camden.
On 5 August 1969, Drake recorded five songs for the BBC's John Peel show ("Cello Song", "Three Hours", "River Man", "Time of No Reply" and an early version of "Bryter Layter"), three of which were broadcast on the following night. A month later, on 24 September, he opened for Fairport Convention at the Royal Festival Hall in London, followed by appearances at folk clubs in Birmingham and Hull. Folk singer Michael Chapman said of the performances:The folkies did not take to him; [they] wanted songs with choruses. They completely missed the point. He didn't say a word the entire evening. It was actually quite painful to watch. I don't know what the audience expected, I mean, they must have known they weren't going to get sea-shanties and sing-alongs at a Nick Drake gig!
The experience reinforced Drake's decision to retreat from live appearances; the few concerts he did play around this time were usually brief, awkward, and poorly attended. Drake seemed reluctant to perform and rarely addressed his audience. As many of his songs were played in different tunings, he frequently paused to retune between numbers.
answer:
Where did the man who did not like to play in front of live audiences end his studies?


question:
Passage: Santa Anna had successfully escaped towards Vince's Bridge.  Finding the bridge destroyed, he hid in the marsh and was captured the following day. He was brought before Houston, who had been shot in the ankle and badly wounded. Texian soldiers gathered around, calling for the Mexican general's immediate execution.  Bargaining for his life, Santa Anna suggested that he order the remaining Mexican troops to stay away.  In a letter to Filisola, who was now the senior Mexican official in Texas, Santa Anna wrote that "yesterday evening [we] had an unfortunate encounter" and ordered his troops to retreat to Béxar and await further instructions.Urrea urged Filisola to continue the campaign.  He was confident that he could successfully challenge the Texian troops.  According to Hardin, "Santa Anna had presented Mexico with one military disaster; Filisola did not wish to risk another."  Spring rains ruined the ammunition and rendered the roads almost impassable, with troops sinking to their knees in mud.  Mexican troops were soon out of food, and began to fall ill from dysentery and other diseases.  Their supply lines had completely broken down, leaving no hope of further reinforcements. Filisola later wrote that "Had the enemy met us under these cruel circumstances, on the only road that was left, no alternative remained but to die or surrender at discretion".For several weeks after San Jacinto, Santa Anna continued to negotiate with Houston, Rusk, and then Burnet.  Santa Anna suggested two treaties, a public version of promises made between the two countries, and a private version that included Santa Anna's personal agreements.  The Treaties of Velasco required that all Mexican troops retreat south of the Rio Grande and that all private property—code for slaves—be respected and restored.  Prisoners-of-war would be released unharmed, and Santa Anna would be given passage to Veracruz immediately.  He secretly promised to persuade the Mexican Congress to acknowledge the Republic of Texas and to recognize the Rio Grande as the border between the two countries.When Urrea began marching south in mid-May, many families from San Patricio who had supported the Mexican army went with him.  When Texian troops arrived in early June, they found only 20 families remaining.  The area around San Patricio and Refugio suffered a "noticeable depopulation" in the Republic of Texas years.  Although the treaty had specified that Urrea and Filisola would return any slaves their armies had sheltered, Urrea refused to comply. Many former slaves followed the army to Mexico, where they could be free.  By late May the Mexican troops had crossed the Nueces.  Filisola fully expected that the defeat was temporary and that a second campaign would be launched to retake Texas.
answer:
What is the name of the person who secretly promised to persuade the Mexican Congress to acknowledge the Republic of Texas and to recognize the Rio Grande as the border between the two countries?


question:
Passage: After his share in the Farthest South achievement of the Discovery Expedition, Ernest Shackleton suffered a physical collapse on the return journey, and was sent home with the expedition's relief vessel on orders from Scott; he bitterly resented it, and the two became rivals.  Four years later, Shackleton organised his own polar venture, the Nimrod Expedition, 1907–09. This was the first expedition to set the definite objective of reaching the South Pole, and to have a specific strategy for doing so.To assist his endeavour, Shackleton adopted a mixed transport strategy, involving the use of Manchurian ponies as pack animals, as well as the more traditional dog-sledges. A specially adapted motor car was also taken. Although the dogs and the car were used during the expedition for a number of purposes, the task of assisting the group that would undertake the march to the pole fell to the ponies. The size of Shackleton's four-man polar party was dictated by the number of surviving ponies; of the ten that were embarked in New Zealand, only four had survived the 1908 winter.Ernest Shackleton and three companions (Frank Wild, Eric Marshall and Jameson Adams) began their march on 29 October 1908. On 26 November they surpassed the farthest point reached by Scott's 1902 party. "A day to remember", wrote Shackleton in his journal, noting that they had reached this point in far less time than on the previous march with Captain Scott. Shackleton's group continued southward, discovering and ascending the Beardmore Glacier to the polar plateau, and then marching on to reach their Farthest South point at 88°23'S, a mere 97 nautical miles (180 km; 112 mi) from the pole, on 9 January 1909. Here they planted the Union Jack presented to them by Queen Alexandra, and took possession of the plateau in the name of King Edward VII, before shortages of food and supplies forced them to turn back north. This was, at the time, the closest convergence on either pole. The increase of more than six degrees south from Scott's previous record was the greatest extension of Farthest South since Captain Cook's 1773 mark. Shackleton was treated as a hero on his return to England. His record was to stand for less than three years, being passed by Amundsen on 7 December 1911.
answer:
What were the last names of the two people who became rivals?