In this task, you're given a question, a context passage, and four options which are terms from the passage. After reading a passage, you will get a brief understanding of the terms. Your job is to determine by searching and reading further information of which term you can answer the question. Indicate your choice as 'a', 'b', 'c', or 'd'. If you think more than one option is plausible, choose the more probable option to help you answer the question.

[EX Q]: Question: How many copies did "My Generation" sell the year it was released? Passage:A deliberate use of acoustic feedback was pioneered by Blues and Rock'n'Roll guitarists such as Willie Johnson, Johnny Watson and Link Wray. According to AllMusic's Richie Unterberger, the very first use of feedback on a commercial rock record is the introduction of the song "I Feel Fine" by the Beatles, recorded in 1964. Jay Hodgson agrees that it was the first chart-topper to showcase feedback distortion, created by John Lennon leaning a semi-acoustic guitar against an amplifier. The Who's 1965 hits "Anyway, Anyhow, Anywhere" and "My Generation" featured feedback manipulation by Pete Townshend, with an extended solo in the former and the shaking of his guitar in front of the amplifier to create a throbbing noise in the latter. Canned Heat's "Fried Hockey Boogie" (off of their 1968 album Boogie with Canned Heat) also featured guitar feedback produced by Henry Vestine during his solo to create a highly amplified distorted boogie style of feedback. In 1963, the teenage Brian May and his father custom-built his signature guitar Red Special, which was purposely designed to feed back.
 Links: a. Anyway, Anyhow, Anywhere b. My Generation c. Boogie with Canned Heat d. Johnny "Guitar" Watson
[EX A]: b

[EX Q]: Question: How many soldiers died in the battle that Stanley missed due to illness? Passage:He fought at several battles in Missouri, including the Battle of Wilson's Creek, where he guarded the supply trains. President Abraham Lincoln appointed Stanley as brigadier general September 28, 1861, although the U.S. Senate did not confirm the appointment until March 7, 1862. Fighting in the Western Theater, he participated in the operations against New Madrid, Missouri and the Battle of Island Number Ten. He was involved in numerous major battles, including the Second Battle of Corinth, where he commanded a division of infantry of the Army of the Mississippi, and the Battle of Stones River, in which he led the cavalry of the Army of the Cumberland. On March 11, 1863, Stanley was appointed major general to rank from November 29, 1862. Stanley also led the Union cavalry in the Tullahoma Campaign. He fell ill late in 1863 and missed the Battle of Chickamauga. In 1864, he fought under William Tecumseh Sherman as a division commander in the IV Corps of the Army of the Cumberland during the Atlanta Campaign, and he was promoted to command of the corps when Maj. Gen. Oliver O. Howard was named commander of the Army of the Tennessee. After the capture of the city, instead of employing him marching to the sea, Sherman dispatched Stanley and his IV Corps to Tennessee to help protect the state from invasion by John Bell Hood's Army of Tennessee.
 Links: a. Army of Tennessee b. Missouri c. Battle of Chickamauga d. John Bell Hood
[EX A]: c

[EX Q]: Question: The Johanna Meier Operat Theater Institute is located at a University in what state? Passage:John Harger Stewart (born March 31, 1940, Cleveland) is an American tenor, conductor, and voice teacher who had an active international singing career in concerts and operas from 1964 to 1990. He began his career singing regularly with the Santa Fe Opera from the mid-1960s through the early 1970s; after which he appeared only periodically in Santa Fe up through the mid-1980s. He was particularly active with the New York City Opera during the 1970s and 1980s, and with the Frankfurt Opera from the mid-1970s through 1990. He also appeared as a guest artist with several other important American opera companies, including the Metropolitan Opera and the Washington National Opera, and at other European opera houses like the De Nederlandse Opera in Amsterdam, the Deutsche Oper Berlin, the Grand Théâtre de Genève in Switzerland, and the Wexford Festival Opera in Ireland. Now retired from singing, he is currently the Director of Vocal Activities at Washington University in St. Louis where he also teaches singing and conducts student opera productions and choirs. He also serves as the opera conductor at the Johanna Meier Opera Theater Institute at Black Hills State University.
 Links: a. Oper Frankfurt b. Tenor c. Black Hills State University d. Santa Fe Opera
[EX A]:
c