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.

Input: Consider Input: Question: Which is the oldest ancient religious text that mentions Tripura? Passage:Although there is no evidence of lower or middle Paleolithic settlements in Tripura, Upper Paleolithic tools made of fossil wood have been found in the Haora and Khowai valleys. The Indian epic, the Mahabharata; ancient religious texts, the Puranas; and the Edicts of Ashoka stone pillar inscriptions of the emperor Ashoka dating from the third century BCE all mention Tripura. An ancient name of Tripura is Kirat Desh (English: "The land of Kirat"), probably referring to the Kirata Kingdoms or the more generic term Kirata. However, it is unclear whether the extent of modern Tripura is coterminous with Kirat Desh. The region was under the rule of the Twipra Kingdom for centuries, although when this dates from is not documented. The Rajmala, a chronicle of Tripuri kings which was first written in the 15th century, provides a list of 179 kings, from antiquity up to Krishna Kishore Manikya (18301850), but the reliability of the Rajmala has been doubted.
Links: a. Puranas b. Haora River c. Upper Paleolithic d. Khowai River

Output: a

Input: Consider Input: Question: What version of iOS was current the year Bejeweled 2 was released on the platform? Passage:Bejeweled 2 is a tile-matching puzzle video game. The sequel to Bejeweled, it was developed and published by PopCap Games. In 2004, Bejeweled 2 Deluxe was released, which includes extra game modes and features. Bejeweled 2 Deluxe was released for the Xbox 360 as a downloadable Xbox Live Arcade game on November 22, 2005. In 2007, the game was released on the PlayStation 2 alongside another PopCap game, AstroPop as a two-game compilation pack as PopCap Hits! Volume 1. PopCap also released a version for iOS in 2008. Bejeweled 2 was also released for PlayStation 3 on the PlayStation Network on January 29, 2009, on the Wii via WiiWare on June 14, 2010, and on PlayStation Portable on June 29, 2010, and for Android. As with the original Bejeweled, Bejeweled 2 is based on the Shariki game mechanic.
Links: a. Xbox Live Arcade b. Shariki c. Ios d. PlayStation 3

Output: c

Input: Consider Input: Question: Is the first proposer of the existence of an Abydos Dynasty still alive today? Passage:The existence of an Abydos Dynasty was first proposed by Detlef Franke and later elaborated on by Kim Ryholt in 1997. Ryholt observes that two attested kings of this period, Wepwawetemsaf (Wepwawet is his protection) and Pantjeny (He of Thinis), bore names in connection with Abydos: Wepwawet being an important Abydene god and Thinis being a prominent city, located a few miles north of Abydos. Additionally, Wepwawetemsaf, Pantjeny and Snaaib, another king of the period, are each known from single stelae discovered in Abydos, which could be a sign that this was their seat of power. Finally, Ryholt argues that the existence of an Abydos Dynasty would explain 16 entries of the Turin canon at the end of the 16th Dynasty. The Abydos Dynasty may have come into existence in the time lapse between the fall of the 13th Dynasty with the conquest of Memphis by the Hyksos and the southward progression of the Hyksos to Thebes.
Links: a. Pantjeny b. Hyksos c. Detlef Franke d. Wepwawet
Output: c