In this task, you're expected to write answers to questions involving multiple references to the same entity. The answer to the question should be unambiguous and a phrase in the paragraph. Most questions can have only one correct answer.

Passage: Sam Clayton is too good for his own good. A sermon by Rev. Daniels persuades him to help others in every way he can, including his wife Lu's good-for-nothing brother, Claude, who's been living with them rent-free for six months, and their neighbors the Butlers, who need a car for a vacation when theirs breaks down.
Sam is a department store manager whose boss, H.C. Borden, wants him to sell more and socialize less. Sam's a shoulder for clerk Shirley Mae to cry on when her romance breaks up. He also gives a $5,000 loan, without his wife's knowledge, to Mr. and Mrs. Adams, who need it to save a gas station they bought.
Lu is fed up with Sam's generosity, particularly when he ends up paying for the Butlers' car repairs, then letting the mechanic come over for home-cooked meals. The last straw for Lu comes when she learns they have a chance to put a down payment on a new house, except Sam has lent their nest egg to the Adamses.
Sam is unhappy, too. He's annoyed with the Butlers, who have crashed his car and can't pay to fix it. He also wants Claude to move out. Shirley Mae's troubles come to his door after she takes too many pills. Sam even gets robbed, and the bank refuses to make him a loan.
He is at his wit's end when the Adamses surprise him with a check for $6,000. They also give Claude a job, and Shirley Mae suddenly thinks she and Claude could have a future together. Sam and Lu feel better about life, particularly when Borden surprises him with a promotion at work. 
Question: Who is given a promotion at work?
Sam Clayton.

Passage: Three years after the destruction of the Death Star, the Rebel Alliance, led by Princess Leia, has set up a new base on the ice planet of Hoth. The Imperial fleet, led by Darth Vader, continues to hunt for the new Rebel base by dispatching probe droids across the galaxy. Luke Skywalker is captured by a wampa while investigating one such probe, but manages to escape from the wampa's lair with his lightsaber. Before Luke succumbs to hypothermic sleep, the Force ghost of his late mentor, Obi-Wan Kenobi, instructs him to go to Dagobah to train under Jedi Master Yoda. Han Solo locates Luke and cuts open the tauntaun he rode there on to keep his friend warm; they wait there until being rescued by a search party the next morning.
Meanwhile, the probe alerts the Imperial fleet to the Rebels' location. The Empire launches a large-scale attack using AT-AT walkers to capture the base, which forces the Rebels to retreat. Han and Leia escape with C-3PO and Chewbacca on the Millennium Falcon, but the ship's hyperdrive malfunctions. They hide in an asteroid field, where Han and Leia grow closer amidst tension and briefly kiss. Vader summons bounty hunters to assist in finding the Falcon. Luke, meanwhile, escapes with R2-D2 in his X-wing fighter and crash-lands on the swamp planet of Dagobah. He meets a diminutive creature who reveals himself to be Yoda; after conferring with Obi-Wan's spirit, Yoda reluctantly accepts Luke as his student. 
Question: Who is told to go train under Yoda?
Luke.

Passage: Santiago was born in Manila, Philippines, on June 10, 1965, the third of six sons of an anesthesiologist. In 1972, when President Marcos declared martial law, the family immigrated to the United States. After two years in Yonkers, New York, the family moved to Longmeadow, Massachusetts, where Santiago attended Longmeadow High School and graduated from Wilbraham & Monson Academy in 1983. His first experience with a musical instrument was playing a Hammond organ at the age of eight, but he never took on the instrument seriously because he had to share it with five brothers. Santiago first played a guitar at the age of nine after he noticed a classical guitar hanging on his oldest brother's wall for decoration. The first song he learned to play was The Velvet Underground's "Rock and Roll".As a teenager, Santiago became interested in computer programming, naming his first program "Iggy" and his second "Pop" after punk rocker Iggy Pop. He participated in a cycle ride across the United States in aid of charity, but on completing it did not bother to collect the sponsor's money.After graduating from high school in 1983, Santiago studied at the University of Massachusetts Amherst. He remained without a major as long as the university would permit him to, but eventually chose economics. He met Charles Thompson, an anthropology student and the future Pixies frontman, after he heard Thompson and his roommate playing their guitars.  Santiago rushed home to collect his guitar, and was soon playing "non-blues-scale, non-cover-song rock" with Thompson.Santiago and Thompson shared a room at the start of the second semester. Santiago soon introduced his new roommate to 1970s punk and the music of David Bowie. He later recalled their time together in college: "Charles and I had a suite at the college dorm. We'd go to shows, I remember seeing Black Flag and Angst. Initially, I think we just liked each other. I did notice right away that he was playing music ... He'd write 'em [the songs], and I'd throw my ideas on the guitar." In their second year of college, Thompson traveled to Puerto Rico as an exchange student. After six months there living with a "weird, psycho roommate," Thompson sent Santiago a letter with the words "We gotta do it, now is the time, Joe, we gotta chase our dreams"; Santiago replied, saying "Yes, now's the time." Upon receiving this reply, Thompson decided to return to Amherst to start a rock band with Santiago. 
Question: What is the last name of the person who participated in a cycle ride across the United States in aid of charity?

Santiago.