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: What current countries were part of the Ottoman Empire? Passage:Crimea: The Last Crusade is a panoramic history of the Crimean War of 1853–56. Drawing extensively from Russian, French and Ottoman as well as British archives, it combines military, diplomatic, political and cultural history, examining how the war left a lasting mark on the national consciousness of Britain, France, Russia and Turkey. Figes sets the war in the context of the Eastern Question, the diplomatic and political problems caused by the decay of the Ottoman Empire. In particular, he emphasises the importance of the religious struggle between Russia as the defender of the Orthodox and France as the protector of the Catholics in the Ottoman Empire. He frames the war within a longer history of religious conflict between Christians and Muslims in the Balkans, southern Russia and the Caucasus that continues to this day. Figes stresses the religious motive of the Tsar Nicholas I in his bold decision to go to war, arguing that Nicholas was swayed by the ideas of the Pan-Slavs to invade Moldavia and Wallachia and encourage Slav revolts against the Ottomans, despite his earlier adherence to the Legitimist principles of the Holy Alliance. He also shows how France and Britain were drawn into the war by popular ideas of Russophobia that swept across Europe in the wake of the Revolutions of 1830 and 1848. As one reviewer wrote, Figes shows "how the cold war of the Soviet era froze over fundamental fault lines that had opened up in the 19th century."
 Links: a. Crimean War b. Ottoman Empire c. Catholic Church d. Pan-Slavism

Ex Output:
b


Ex Input:
Question: What's the average lifespan of the animal that has a jaw with properties similar to those that probably led to the evolution of baleen? Passage:The oldest true fossils of baleen are only 15 million years old because baleen rarely fossilizes, and scientists believe it originated considerably earlier than that. This is indicated by baleen-related skull modifications being found in fossils from considerably earlier, including a buttress of bone in the upper jaw beneath the eyes, and loose lower jaw bones at the chin. Baleen is believed to have evolved around 30 million years ago, possibly from a hard, gummy upper jaw, like the one a Dall's porpoise has; it closely resembles baleen at the microscopic level. The initial evolution and radiation of baleen plates is believed to have occurred during Early Oligocene when Antarctica broke off from Gondwana and the Antarctic Circumpolar Current was formed, increasing productivity of ocean environments. This occurred because the current kept warm ocean waters away from the area that is now Antarctica, producing steep gradients in temperature, salinity, light, and nutrients, where the warm water meets the cold.
 Links: a. Antarctic Circumpolar Current b. Dall's porpoise c. Salinity d. Salinity

Ex Output:
b


Ex Input:
Question: How old was Abraham Lincoln the year that Harris hosted him at his North End home? Passage:Harris was born in Smithfield, Rhode Island in 1801 and at a young age moved with his parents to Dutchess County, New York where he worked on the family farm and taught school. In 1818 he moved to Ashtabula County, Ohio, but he returned to Rhode Island in 1823 and started working with his uncles William Harris and Samuel Harris in their manufacturing businesses at Valley Falls, Rhode Island and then Albion, Rhode Island. In 1831 Edward Harris started his own small mill in Woonsocket. He eventually built several other successful larger mills in Woonsocket. Harris made large donations to many public causes in Woonsocket, including new roads for the city, the land for Woonsocket High School, the site of Oak Hill Cemetery, and the Harris Institute (a library and auditorium for speakers), which became Woonsocket Harris Public Library, and the former Harris Institute building is now Woonsocket City Hall. Harris served in the Rhode Island State Senate and House of Representatives and was a strong abolitionist and temperance supporter. In the 1840s he ran for governor as the Liberty Party candidate advocating for abolitionism. In 1859 Harris wrote a letter and sent a check to John Brown after his conviction. Harris hosted Abraham Lincoln at his North End home when Lincoln spoke at the Harris Institute in 1860. Harris was married to Rachel Farnham and then after her death to Abby Metcalf and had children in both marriages. Harris died in Woonsocket in 1871. Besides the Harris Institute (Woonsocket City Hall), several of the buildings, which Harris constructed, survive, including Harris Warehouse (1855).
 Links: a. Ashtabula County, Ohio b. Woonsocket, Rhode Island c. Temperance movement d. Abraham Lincoln

Ex Output:

d