Problem: Please answer a question about the following article about History of India:
The early Islamic literature indicates that the conquest of India was one of the very early ambitions of the Muslims, though it was recognized as a particularly difficult one. After conquering Persia, the Arab Umayyad Caliphate incorporated parts of what are now Afghanistan and Pakistan around 720. The book Chach Nama chronicles the Chacha Dynasty's period, following the demise of the Rai Dynasty and the ascent of Chach of Alor to the throne, down to the Arab conquest by Muhammad bin Qasim in the early 8th century AD, by defeating the last Hindu monarch of Sindh, Raja Dahir.
What Arab leader completed the early ambitions of Arabs by conquering parts of northern India?
A: Muhammad bin Qasim
Problem: Please answer a question about the following article about Jews:
Although the Israelites were divided into Twelve Tribes, the Jews (being one offshoot of the Israelites, another being the Samaritans) are traditionally said to descend mostly from the Israelite tribes of Judah (from where the Jews derive their ethnonym) and Benjamin, and partially from the tribe of Levi, who had together formed the ancient Kingdom of Judah, and the remnants of the northern Kingdom of Israel who migrated to the Kingdom of Judah and assimilated after the 720s BCE, when the Kingdom of Israel was conquered by the Neo-Assyrian Empire.
From where do the Jews derive their ethonynm?
A: Israelite tribes of Judah
Problem: Please answer a question about the following article about Tucson, Arizona:
Tracks include Tucson Raceway Park and Rillito Downs. Tucson Raceway Park hosts NASCAR-sanctioned auto racing events and is one of only two asphalt short tracks in Arizona. Rillito Downs is an in-town destination on weekends in January and February each year. This historic track held the first organized quarter horse races in the world, and they are still racing there. The racetrack is threatened by development. The Moltacqua racetrack, was another historic horse racetrack located on what is now Sabino Canyon Road and Vactor Ranch Trail, but it no longer exists.
What is on the former site of the Moltacqua track now?
A: Sabino Canyon Road and Vactor Ranch Trail
Problem: Please answer a question about the following article about Film speed:
Film speed is used in the exposure equations to find the appropriate exposure parameters. Four variables are available to the photographer to obtain the desired effect: lighting, film speed, f-number (aperture size), and shutter speed (exposure time). The equation may be expressed as ratios, or, by taking the logarithm (base 2) of both sides, by addition, using the APEX system, in which every increment of 1 is a doubling of exposure; this increment is commonly known as a "stop". The effective f-number is proportional to the ratio between the lens focal length and aperture diameter, the diameter itself being proportional to the square root of the aperture area. Thus, a lens set to f/1.4 allows twice as much light to strike the focal plane as a lens set to f/2. Therefore, each f-number factor of the square root of two (approximately 1.4) is also a stop, so lenses are typically marked in that progression: f/1.4, 2, 2.8, 4, 5.6, 8, 11, 16, 22, 32, etc.
What variables help the photographer produce the desired effect?
A:
lighting, film speed, f-number (aperture size), and shutter speed (exposure time)