Input: Read this: Evidence of Han-era mechanical engineering comes largely from the choice observational writings of sometimes disinterested Confucian scholars. Professional artisan-engineers (jiang 匠) 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 (丁緩) 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.
Question: Which engineer was responsible for first inventing the zoetrope lamp?

Output: Ding Huan


QUES: The term also has closely related synonyms that are employed throughout the Quran. Each synonym possesses its own distinct meaning, but its use may converge with that of qurʼān in certain contexts. Such terms include kitāb (book); āyah (sign); and sūrah (scripture). The latter two terms also denote units of revelation. In the large majority of contexts, usually with a definite article (al-), the word is referred to as the "revelation" (waḥy), that which has been "sent down" (tanzīl) at intervals. Other related words are: dhikr (remembrance), used to refer to the Quran in the sense of a reminder and warning, and ḥikmah (wisdom), sometimes referring to the revelation or part of it.

What name does the Quran use for itself that means "revelation"?
What is the answer?
ANS: waḥy


QUES: The budget of the city for 2013 was €7.6 billion, of which 5.4 billion went for city administration, while €2.2 billion went for investment. The largest part of the budget (38 percent) went for public housing and urbanism projects; 15 percent for roads and transport; 8 percent for schools (which are mostly financed by the state budget); 5 percent for parks and gardens; and 4 percent for culture. The main source of income for the city is direct taxes (35 percent), supplemented by a 13-percent real estate tax; 19 percent of the budget comes in a transfer from the national government.
How much of the budget was allocated for city administration?

ANS: 5.4 billion


The severe weather in the Alps has been studied since the 18th century; particularly the weather patterns such as the seasonal foehn wind. Numerous weather stations were placed in the mountains early in the early 20th century, providing continuous data for climatologists. Some of the valleys are quite arid such as the Aosta valley in Italy, the Maurienne in France, the Valais in Switzerland, and northern Tyrol.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Where is the Aosta valley located?
Ah, so.. Italy


Question: High-definition image sources include terrestrial broadcast, direct broadcast satellite, digital cable, IPTV (including GoogleTV Roku boxes and AppleTV or built into "Smart Televisions"), Blu-ray video disc (BD), and internet downloads.
Try to answer this question if possible: Terrestrial broadcast and direct broadcast satellite are examples of what?
Answer: High-definition image sources


QUES: Holes through a PCB are typically drilled with small-diameter drill bits made of solid coated tungsten carbide. Coated tungsten carbide is recommended since many board materials are very abrasive and drilling must be high RPM and high feed to be cost effective. Drill bits must also remain sharp so as not to mar or tear the traces. Drilling with high-speed-steel is simply not feasible since the drill bits will dull quickly and thus tear the copper and ruin the boards. The drilling is performed by automated drilling machines with placement controlled by a drill tape or drill file. These computer-generated files are also called numerically controlled drill (NCD) files or "Excellon files". The drill file describes the location and size of each drilled hole.
What kind of material sometimes used for drilling will lose sharpness quickly if used for PCBs?

ANS:
high-speed-steel