In some countries, law enforcement uses race to profile suspects. This use of racial categories is frequently criticized for perpetuating an outmoded understanding of human biological variation, and promoting stereotypes. Because in some societies racial groupings correspond closely with patterns of social stratification, for social scientists studying social inequality, race can be a significant variable. As sociological factors, racial categories may in part reflect subjective attributions, self-identities, and social institutions.
What may in part reflect subjective attributes, self-identities and social institutions? 
sociological factors


Input: Lighting
Many newer control systems are using wireless mesh open standards (such as ZigBee), which provides benefits including easier installation (no need to run control wires) and interoperability with other standards-based building control systems (e.g. security).

What type of standard do newer control systems use? 
Output: wireless mesh open standards


Input: Article: The territory of modern-day Mexico was home to numerous indigenous civilizations prior to the arrival of the Spanish conquistadores: The Olmecs, who flourished from between 1200 BCE to about 400 BCE in the coastal regions of the Gulf of Mexico; the Zapotecs and the Mixtecs, who held sway in the mountains of Oaxaca and the Isthmus of Tehuantepec; the Maya in the Yucatan (and into neighbouring areas of contemporary Central America); the Purépecha in present-day Michoacán and surrounding areas, and the Aztecs/Mexica, who, from their central capital at Tenochtitlan, dominated much of the centre and south of the country (and the non-Aztec inhabitants of those areas) when Hernán Cortés first landed at Veracruz.

Now answer this question: Who lived in the Yucatan?

Output: the Maya


Article: Season ten is the first to include online auditions where contestants could submit a 40-second video audition via Myspace. Karen Rodriguez was one such auditioner and reached the final rounds.

Question: What was the first season of American Idol to feature online auditions?
Ans: Season ten


Here is a question about this article: Coats of arms were very important to the Polish nobility. Its heraldic system evolved together with its neighbours in Central Europe, while differing in many ways from the heraldry of other European countries. Polish knighthood families had its counterparts, links or roots in Moravia (i.e. Poraj) and Germany (i.e. Junosza).
What is the answer to this question: What was very important to the polish nobility?
****
So... Coats of arms


Article: The wildcard round returned in season eight, wherein there were three groups of twelve, with three contestants moving forward – the highest male, the highest female, and the next highest-placed singer - for each night, and four wildcards were chosen by the judges to produce a final 13. Starting season ten, the girls and boys perform on separate nights. In seasons ten and eleven, five of each gender were chosen, and three wildcards were chosen by the judges to form a final 13. In season twelve, the top twenty semifinalists were split into gender groups, with five of each gender advancing to form the final 10. In season thirteen, there were thirty semifinalists, but only twenty semifinalists (ten for each gender) were chosen by the judges to perform on the live shows, with five in each gender and three wildcards chosen by the judges composing the final 13.

Question: How many wildcard contestants were chosen?
Ans:
four