Input: Article: Patterns such as those seen in human physical and genetic variation as described above, have led to the consequence that the number and geographic location of any described races is highly dependent on the importance attributed to, and quantity of, the traits considered. Scientists discovered a skin-lighting mutation that partially accounts for the appearance of Light skin in humans (people who migrated out of Africa northward into what is now Europe) which they estimate occurred 20,000 to 50,000 years ago. The East Asians owe their relatively light skin to different mutations. On the other hand, the greater the number of traits (or alleles) considered, the more subdivisions of humanity are detected, since traits and gene frequencies do not always correspond to the same geographical location. Or as Ossorio & Duster (2005) put it:

Now answer this question: What do East Asians have to thank for their relatively light skin?

Output: different mutations

Input: Article: The finale is the two-hour last episode of the season, culminating in revealing the winner. For seasons one, three through six, and fourteen, it was broadcast from the Dolby Theatre, which has an audience capacity of approximately 3,400. The finale for season two took place at the Gibson Amphitheatre, which has an audience capacity of over 6,000. In seasons seven through thirteen, the venue was at the Nokia Theatre, which holds an audience of over 7,000.

Now answer this question: In what episode is the winner of American Idol revealed?

Output: The finale

Input: Article: The term child labour can be misleading when it confuses harmful work with employment that may be beneficial to children. It can also ignore harmful work outside employment and any benefits children normally derive from their work. Domestic work is an example: all families but the rich must work at cleaning, cooking, caring, and more to maintain their homes. In most families in the world, this process extends to productive activities, especially herding and various types of agriculture, and to a variety of small family businesses. Where trading is a significant feature of social life, children can start trading in small items at an early age, often in the company of family members or of peers.

Now answer this question: All but what type of children must learn to clean?

Output:
rich