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.

Example Input: Question: Who ruled the Seljuk Empire when they annexed Tasburun? Passage:According to mayor's page Tasburun was founded by Turkmen tribe named Tasburun after Seljuks annexed the area to their realm in 1064. In 1239 it was captured by the Mongols and in 1514 by the Ottoman Empire. It was ceded to Safavid Persia by the Treaty of Istanbul (1736) . In 1746 it was returned to Ottoman Empire by the Treaty of Kerden but lost to Russian Empire by the Treaty of San Stefano signed after the Russo-Turkish War (18771878). At the end of the First World War it was returned to Turkey. In 1993 it was declared a seat of township.
Links: a. World War I b. Ottoman Empire c. Treaty of San Stefano d. Seljuq dynasty
Example Output: d

Example Input: Question: Was Willemstad successfully defended against the French in 1793? Passage:By the 1790s Braak was in the Caribbean, and was present at the defence against the French of Willemstad, part of the Dutch colony at Curacao, in 1793. By late 1794 she was ordered to escort a convoy of East Indiamen to Batavia in the Netherlands East Indies. En route she called at the English port of Falmouth, unaware that the French had since invaded the Netherlands and proclaimed the Batavian Republic as a client state, compelling the Dutch to declare war on the British. On the arrival of the convoy at falmouth, the Royal Navy seized the 26 merchantmen and six warships of the convoy, including De Braak. A boarding party from the sloop-of-war took over De Braak. Forty-six Royal Navy vessels that were at Plymouth shared in the prize money.
Links: a. Warship b. Willemstad c. Batavian Republic d. Willemstad
Example Output: b

Example Input: Question: What are some other artists that signed with 10cc's second label? Passage:After supporting The Moody Blues on tour as Hotlegs, and their acclaimed work as studio band for Ramases, Kasenetz-Katz, Neil Sedaka and others, the four session musicians decided to pool their talents as a unit. In 1972, they signed to Jonathan King's UK Records label, who named the band 10cc releasing two albums, 10cc (1973), and Sheet Music (1974), which featured five UK hit singles, "Donna" No. 2, "Rubber Bullets" No. 1, "The Dean and I" No. 10, "The Wall Street Shuffle" No. 10 and "Silly Love" No. 24. The band satirized its small royalty in "4% of Something", and Lisberg tried to leverage the band's success by renegotiating but UK Records was intransigent. In 1975, for a big advance and fair royalty, 10cc left UK Records and moved to Phonogram.
Links: a. Jonathan King b. Rubber Bullets c. Phonogram Inc. d. Phonogram Inc.
Example Output:
c