Input: Article: Warfare in Normandy at the time was shaped by the defensive potential of castles and the increasing costs of conducting campaigns. The Norman frontiers had limited natural defences but were heavily reinforced with castles, such as Chateau Gaillard, at strategic points, built and maintained at considerable expense. It was difficult for a commander to advance far into fresh territory without having secured his lines of communication by capturing these fortifications, which slowed the progress of any attack. Armies of the period could be formed from either feudal or mercenary forces. Feudal levies could only be raised for a fixed length of time before they returned home, forcing an end to a campaign; mercenary forces, often called Brabancons after the Duchy of Brabant but actually recruited from across northern Europe, could operate all year long and provide a commander with more strategic options to pursue a campaign, but cost much more than equivalent feudal forces. As a result, commanders of the period were increasingly drawing on larger numbers of mercenaries.

Now answer this question: What castle was built at a strategic point?

Output: Chateau Gaillard

Input: Article: Modern-day Nigeria has been the site of numerous kingdoms and tribal states over the millennia. The modern state originated from British colonial rule beginning in the 19th century, and the merging of the Southern Nigeria Protectorate and Northern Nigeria Protectorate in 1914. The British set up administrative and legal structures whilst practising indirect rule through traditional chiefdoms. Nigeria became a formally independent federation in 1960, and plunged into a civil war from 1967 to 1970. It has since alternated between democratically-elected civilian governments and military dictatorships, until it achieved a stable democracy in 1999, with its 2011 presidential elections being viewed as the first to be conducted reasonably freely and fairly.

Now answer this question: When did a Nigerian Civil War begin?

Output: 1967

Input: Article: The changes included a new corporate color palette, small modifications to the GE logo, a new customized font (GE Inspira) and a new slogan, "Imagination at work", composed by David Lucas, to replace the slogan "We Bring Good Things to Life" used since 1979. The standard requires many headlines to be lowercased and adds visual "white space" to documents and advertising. The changes were designed by Wolff Olins and are used on GE's marketing, literature and website. In 2014, a second typeface family was introduced: GE Sans and Serif by Bold Monday created under art direction by Wolff Olins.

Now answer this question: Who composed GE's slogan "Imagination at work?"?

Output:
David Lucas