Input: Modern history
The Russian Revolution is the series of revolutions in Russia in 1917, which destroyed the Tsarist autocracy and led to the creation of the Soviet Union. Following the abdication of Nicholas II of Russia, the Russian Provisional Government was established. In October 1917, a red faction revolution occurred in which the Red Guard, armed groups of workers and deserting soldiers directed by the Bolshevik Party, seized control of Saint Petersburg (then known as Petrograd) and began an immediate armed takeover of cities and villages throughout the former Russian Empire.

What event happened in October of 1917?
Output: a red faction revolution

Input: Westminster Abbey
King Edward's Chair (or St Edward's Chair), the throne on which English and British sovereigns have been seated at the moment of coronation, is housed within the abbey and has been used at every coronation since 1308. From 1301 to 1996 (except for a short time in 1950 when it was temporarily stolen by Scottish nationalists), the chair also housed the Stone of Scone upon which the kings of Scots are crowned. Although the Stone is now kept in Scotland, in Edinburgh Castle, at future coronations it is intended that the Stone will be returned to St Edward's Chair for use during the coronation ceremony.[citation needed]

Who had stolen the Stone of Scone?
Output: Scottish nationalists

Input: Party leaders of the United States House of Representatives
To a large extent, the minority leader's position is a 20th-century innovation. Prior to this time congressional parties were often relatively disorganized, so it was not always evident who functioned as the opposition floor leader. Decades went by before anything like the modern two-party congressional system emerged on Capitol Hill with official titles for those who were its official leaders. However, from the beginning days of Congress, various House members intermittently assumed the role of "opposition leader." Some scholars suggest that Representative James Madison of Virginia informally functioned as the first "minority leader" because in the First Congress he led the opposition to Treasury Secretary Alexander Hamilton's fiscal policies.

Why was minority leader position created?
Output: not always evident who functioned as the opposition floor leader

Input: Crimean War
In July 1855, the allied squadron tried to go past Taganrog to Rostov on Don, entering the Don River through the Mius River. On 12 July 1855 HMS Jasper grounded near Taganrog thanks to a fisherman who moved buoys into shallow water. The Cossacks captured the gunboat with all of its guns and blew it up. The third siege attempt was made 19–31 August 1855, but the city was already fortified and the squadron could not approach close enough for landing operations. The allied fleet left the Gulf of Taganrog on the 2nd September 1855, with minor military operations along the Azov Sea coast continuing until late autumn 1855.

Why did the third siege attempt fail?
Output:
the city was already fortified