Here is a question about this article: Evidence of Han-era mechanical engineering comes largely from the choice observational writings of sometimes disinterested Confucian scholars. Professional artisan-engineers (jiang ) did not leave behind detailed records of their work. Han scholars, who often had little or no expertise in mechanical engineering, sometimes provided insufficient information on the various technologies they described. Nevertheless, some Han literary sources provide crucial information. For example, in 15 BC the philosopher Yang Xiong described the invention of the belt drive for a quilling machine, which was of great importance to early textile manufacturing. The inventions of the artisan-engineer Ding Huan () are mentioned in the Miscellaneous Notes on the Western Capital. Around 180 AD, Ding created a manually operated rotary fan used for air conditioning within palace buildings. Ding also used gimbals as pivotal supports for one of his incense burners and invented the world's first known zoetrope lamp.
What is the answer to this question: What type of invention was used to provide air conditioning for the palace buildings?
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So... rotary fan

Here is a question about this article: In 2012 the Paris agglomeration (urban area) counted 28,800 people without a fixed residence, an increase of 84 percent since 2001; it represents 43 percent of the homeless in all of France. Forty-one percent were women, and 29 percent were accompanied by children. Fifty-six percent of the homeless were born outside France, the largest number coming from Africa and Eastern Europe. The city of Paris has sixty homeless shelters, called Centres d'hebergement et de reinsertion sociale or CHRS, which are funded by the city and operated by private charities and associations.
What is the answer to this question: Who funds these homeless shelters?
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So... the city

Here is a question about this article: The Great Garden is an important European baroque garden. The palace itself, however, was largely destroyed by Allied bombing but is currently under reconstruction.[citation needed] Some points of interest are the Grotto (the interior was designed by the French artist Niki de Saint-Phalle), the Gallery Building, the Orangerie and the two pavilions by Remy de la Fosse. The Great Garden consists of several parts. The most popular ones are the Great Ground and the Nouveau Jardin. At the centre of the Nouveau Jardin is Europe's highest garden fountain. The historic Garden Theatre inter alia hosted the musicals of the German rock musician Heinz Rudolf Kunze.[citation needed]
What is the answer to this question: What is at the centre of the Nouveau Jardin?
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So...
Europe's highest garden fountain