Problem: Please answer a question about the following article about Han dynasty:
Emperor Zhang's (r. 75–88 AD) reign came to be viewed by later Eastern Han scholars as the high point of the dynastic house. Subsequent reigns were increasingly marked by eunuch intervention in court politics and their involvement in the violent power struggles of the imperial consort clans. With the aid of the eunuch Zheng Zhong (d. 107 AD), Emperor He (r. 88–105 AD) had Empress Dowager Dou (d. 97 AD) put under house arrest and her clan stripped of power. This was in revenge for Dou's purging of the clan of his natural mother—Consort Liang—and then concealing her identity from him. After Emperor He's death, his wife Empress Deng Sui (d. 121 AD) managed state affairs as the regent empress dowager during a turbulent financial crisis and widespread Qiang rebellion that lasted from 107 to 118 AD.
Who concealed the identity of Emperor He's mother?
A: Empress Dowager Dou
Problem: Please answer a question about the following article about Beyoncé:
On February 6, 2016, one day before her performance at the Super Bowl, Beyoncé released a new single exclusively on music streaming service Tidal called "Formation".
What was the name of the streaming service?
A: Tidal
Problem: Please answer a question about the following article about University of Notre Dame:
The School of Architecture was established in 1899, although degrees in architecture were first awarded by the university in 1898. Today the school, housed in Bond Hall, offers a five-year undergraduate program leading to the Bachelor of Architecture degree. All undergraduate students study the third year of the program in Rome. The university is globally recognized for its Notre Dame School of Architecture, a faculty that teaches (pre-modernist) traditional and classical architecture and urban planning (e.g. following the principles of New Urbanism and New Classical Architecture). It also awards the renowned annual Driehaus Architecture Prize.
What length is the course of study at the Notre Dame School of Architecture?
A: five-year
Problem: Please answer a question about the following article about Incandescent light bulb:
In 1872, Russian Alexander Lodygin invented an incandescent light bulb and obtained a Russian patent in 1874. He used as a burner two carbon rods of diminished section in a glass receiver, hermetically sealed, and filled with nitrogen, electrically arranged so that the current could be passed to the second carbon when the first had been consumed. Later he lived in the USA, changed his name to Alexander de Lodyguine and applied and obtained patents for incandescent lamps having chromium, iridium, rhodium, ruthenium, osmium, molybdenum and tungsten filaments, and a bulb using a molybdenum filament was demonstrated at the world fair of 1900 in Paris.
Who patented an incandescent light bulb in Russia in 1874?
A:
Alexander Lodygin