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 Input:
Question: Which modernist sculptor is younger, Joseph Csaky or Jean Arp? Passage:In 1953, the foundation's collecting criteria expanded under its new director, James Johnson Sweeney. Sweeney rejected Rebay's dismissal of "objective" painting and sculpture, and he soon acquired Constantin Brâncuși's Adam and Eve (1921), followed by works of other modernist sculptors, including Joseph Csaky, Jean Arp, Calder, Alberto Giacometti and David Smith. Sweeney reached beyond the 20th century to acquire Paul Cézanne's Man with Crossed Arms (c. 1899). The same year, the foundation also received a gift of 28 important works from the Estate of Katherine S. Dreier, a founder of America's first collection to be called a modern art museum, the Société Anonyme. Dreier had been a colleague of Rebay's. The works included Little French Girl (1914–18) by Brâncuși, an untitled still life (1916) by Juan Gris, a bronze sculpture (1919) by Alexander Archipenko and three collages (1919–21) by German Hanoverian Dadaist Schwitters. It also included works by Calder, Marcel Duchamp, El Lissitzky and Mondrian. Among others, Sweeney also acquired the works of Alberto Giacometti, David Hayes, Willem de Kooning and Jackson Pollock.
 Links: a. Joseph Csaky b. Jackson Pollock c. Constantin Brâncuși d. Marcel Duchamp

Ex Output:
a


Ex Input:
Question: What are the names of the La Quinta Esencia hit singles? Passage:Self-titled debut album WarCry was released on April 17, 2002. Guitarists Pablo García and Fernando Mon appeared only as guest musicians on the debut album, but became full-time members on 2002 along with keyboardist Manuel Ramil and bassist Alvaro Jardón. Second album El Sello De Los Tiempos was released on December 1, 2002. At the end of 2003, Jardón left the band due to musical and personal issues. On January 1, 2004 was released the third album Alea Jacta Est striking all the music stores around Spain. On the first concert of the tour supporting the album, the band presented Roberto García, formerly of Avalanch, as Jardón's replacement. Their fourth studio album, ¿Dónde Está La Luz?, was released on February 1, 2005, considered by critics "their heaviest album to date". They embarked on a supporting tour throughout Spain. WarCry played a sold-concert in Madrid. That performance was released on February 27, 2006 as a live album, named Directo A La Luz and soon was certified gold. La Quinta Esencia was their fifth album, released on September 18, 2006 with a great acceptance by the fans and the press, taking them to the highest positions on the Spanish charts. Sixth album was set to be released on May/June, 2008, but after the lineup changes they pushed it back to September, 2008. Víctor García stated that "this album will express much duality in human beings — good and evil."
 Links: a. Alea Jacta Est b. Spain c. Spain d. La Quinta Esencia

Ex Output:
d


Ex Input:
Question: Is the power plant at Old Salt Lake still in use? Passage:The Old Salt Lake was used by the Chowigna Indians who dug up salt from the bottom. Old Salt Lake was in what is now Redondo Beach, California. In 1856 Henry Johnson and lawyer William Allanson purchased the Old Salt Lake land and built a salt evaporation pond to make and sell salt. The site of Old Salt Lake was designated a California Historic Landmark (No.373) on Sept. 6, 1941. On December 15, 1854 Manuel Dominguez sold 215 acres of the Rancho San Pedro for $500 to Los Angeles businessmen Henry Allanson and William Johnson. Johnson and Allanson also built a boiling house with 48 wood fired kettles to make salt faster than the evaporation pond. Johnson and Allanson exported much of the salt produced by transporting it 10 miles overland to the Port of San Pedro. Spanish Missionaries also dug up salt from the lake in the time of Spanish missions in California. The Salt lake was a large pond that was 600 by 1800 feet, it was fed by a natural spring. Johnson and Allanson shut down the salt works in 1862 and sold it to businessman, Frances Mellus. Frances Mellus ran the Pacific Salt Works at the site until 1881. In 1881 Liverpool Salt Works at the Salton Sea, a rival company, purchased Pacific Salt Works and the closed. The lake was 600 feet from the Redondo Beach sea shore at an elevation of about 10 feet. In 1955 a granite marker was put up at the site on Harbor Drive near the AES electricity power plant. In 1901 the fire boiler were removed and the buildings were abandoned for almost 20 years, in 1924 all structures at the site were removed. Southern California Edison built the south Bay power plant on the site in 1948. In 1998 AES Corporation purchased the power plant. 
 Links: a. California Historical Landmark b. Rancho San Pedro c. Evaporation pond d. AES Corporation

Ex Output:

d