Input: Article: Socioeconomic factors, in combination with early but enduring views of race, have led to considerable suffering within disadvantaged racial groups. Racial discrimination often coincides with racist mindsets, whereby the individuals and ideologies of one group come to perceive the members of an outgroup as both racially defined and morally inferior. As a result, racial groups possessing relatively little power often find themselves excluded or oppressed, while hegemonic individuals and institutions are charged with holding racist attitudes. Racism has led to many instances of tragedy, including slavery and genocide.

Now answer this question: What has led to many tragic instances of events like slavery and genocide?

Output: Racism

Input: Article: Arsenal's parent company, Arsenal Holdings plc, operates as a non-quoted public limited company, whose ownership is considerably different from that of other football clubs. Only 62,217 shares in Arsenal have been issued, and they are not traded on a public exchange such as the FTSE or AIM; instead, they are traded relatively infrequently on the ICAP Securities and Derivatives Exchange, a specialist market. On 10 March 2016, a single share in Arsenal had a mid price of £15,670, which sets the club's market capitalisation value at approximately £975m. Most football clubs aren't listed on an exchange, which makes direct comparisons of their values difficult. Business magazine Forbes valued Arsenal as a whole at $1.3 billion in 2015. Consultants Brand Finance valued the club's brand and intangible assets at $703m in 2015, and consider Arsenal an AAA global brand. Research by the Henley Business School modelled the club's value at £1.118 billion in 2015, the second highest in the Premier League.

Now answer this question: How many shares of Arsenal stock are there?

Output: 62,217

Input: Article: Glass was used extensively during the Middle Ages. Anglo-Saxon glass has been found across England during archaeological excavations of both settlement and cemetery sites. Glass in the Anglo-Saxon period was used in the manufacture of a range of objects including vessels, beads, windows and was also used in jewelry. From the 10th-century onwards, glass was employed in stained glass windows of churches and cathedrals, with famous examples at Chartres Cathedral and the Basilica of Saint Denis. By the 14th-century, architects were designing buildings with walls of stained glass such as Sainte-Chapelle, Paris, (1203–1248) and the East end of Gloucester Cathedral. Stained glass had a major revival with Gothic Revival architecture in the 19th-century. With the Renaissance, and a change in architectural style, the use of large stained glass windows became less prevalent. The use of domestic stained glass increased until most substantial houses had glass windows. These were initially small panes leaded together, but with the changes in technology, glass could be manufactured relatively cheaply in increasingly larger sheets. This led to larger window panes, and, in the 20th-century, to much larger windows in ordinary domestic and commercial buildings.

Now answer this question: When did big windows of stained glass become less common?

Output:
the Renaissance