Problem: Please answer a question about the following article about Elevator:
In the first half of the twentieth century, almost all elevators had no automatic positioning of the floor on which the cab would stop. Some of the older freight elevators were controlled by switches operated by pulling on adjacent ropes. In general, most elevators before WWII were manually controlled by elevator operators using a rheostat connected to the motor. This rheostat (see picture) was enclosed within a cylindrical container about the size and shape of a cake. This was mounted upright or sideways on the cab wall and operated via a projecting handle, which was able to slide around the top half of the cylinder.
Where was the rheostat mounted?
A: upright or sideways on the cab wall
Problem: Please answer a question about the following article about Transistor:
The transistor is the fundamental building block of modern electronic devices, and is ubiquitous in modern electronic systems. First conceived by Julius Lilienfeld in 1926 and practically implemented in 1947 by American physicists John Bardeen, Walter Brattain, and William Shockley, the transistor revolutionized the field of electronics, and paved the way for smaller and cheaper radios, calculators, and computers, among other things. The transistor is on the list of IEEE milestones in electronics, and Bardeen, Brattain, and Shockley shared the 1956 Nobel Prize in Physics for their achievement.
When was the first transistor implemented for practical use?
A: 1947
Problem: Please answer a question about the following article about American Idol:
The thirteenth season premiered on January 15, 2014, with Ryan Seacrest returning as host. Randy Jackson and Keith Urban returned, though Jackson moved from the judging panel to the role of in-mentor. Mariah Carey and Nicki Minaj left the panel after one season. Former judge Jennifer Lopez and former mentor Harry Connick, Jr. joined Urban on the panel. Also, Nigel Lythgoe and Ken Warwick were replaced as executive producers by Per Blankens, Jesse Ignjatovic and Evan Pragger. Bill DeRonde replaced Warwick as a director of the audition episodes, while Louis J. Horvitz replaced Gregg Gelfand as a director of the show.
Who directed the thirteenth season of American Idol?
A: Gregg Gelfand
Problem: Please answer a question about the following article about New York City:
At the end of the Second Anglo-Dutch War, the English gained New Amsterdam (New York) in North America in exchange for Dutch control of Run, an Indonesian island. Several intertribal wars among the Native Americans and some epidemics brought on by contact with the Europeans caused sizable population losses for the Lenape between the years 1660 and 1670. By 1700, the Lenape population had diminished to 200.
How many Lenape lived in the area in 1700?
A:
200