Problem: Extract the answer to the question from the following context. Question: What occurred in the 77th year of the 20th century? Context: Heitaro Nakajima, who developed an early digital audio recorder within Japan's national public broadcasting organization NHK in 1970, became general manager of Sony's audio department in 1971. His team developed a digital PCM adaptor audio tape recorder using a Betamax video recorder in 1973. After this, in 1974 the leap to storing digital audio on an optical disc was easily made. Sony first publicly demonstrated an optical digital audio disc in September 1976. A year later, in September 1977, Sony showed the press a 30 cm disc that could play 60 minutes of digital audio (44,100 Hz sampling rate and 16-bit resolution) using MFM modulation. In September 1978, the company demonstrated an optical digital audio disc with a 150-minute playing time, 44,056 Hz sampling rate, 16-bit linear resolution, and cross-interleaved error correction code—specifications similar to those later settled upon for the standard Compact Disc format in 1980. Technical details of Sony's digital audio disc were presented during the 62nd AES Convention, held on 13–16 March 1979, in Brussels. Sony's AES technical paper was published on 1 March 1979. A week later, on 8 March, Philips publicly demonstrated a prototype of an optical digital audio disc at a press conference called "Philips Introduce Compact Disc" in Eindhoven, Netherlands.

A: Sony showed the press a 30 cm disc that could play 60 minutes of digital audio (44,100 Hz sampling rate and 16-bit resolution) using MFM modulation


Problem: Extract the answer to the question from the following context. Question: Whose citizens in the United States does San Jacinto College serve? Context: Three community college districts exist with campuses in and around Houston. The Houston Community College System serves most of Houston. The northwestern through northeastern parts of the city are served by various campuses of the Lone Star College System, while the southeastern portion of Houston is served by San Jacinto College, and a northeastern portion is served by Lee College. The Houston Community College and Lone Star College systems are within the 10 largest institutions of higher learning in the United States.

A: Houston


Problem: Extract the answer to the question from the following context. Question: Evangelicalism comes from? Context: It gained great momentum in the 18th and 19th centuries with the emergence of Methodism and the Great Awakenings in Britain and North America. The origins of Evangelicalism are usually traced back to the English Methodist movement, Nicolaus Zinzendorf, the Moravian Church, Lutheran pietism, Presbyterianism and Puritanism. Among leaders and major figures of the Evangelical Protestant movement were John Wesley, George Whitefield, Jonathan Edwards, Billy Graham, Harold John Ockenga, John Stott and Martyn Lloyd-Jones.

A: Methodism


Problem: Extract the answer to the question from the following context. Question: What album has sold the most vinyl in one week? Context: In 2014 artist Jack White sold 40,000 copies of his second solo release, Lazaretto, on vinyl. The sales of the record beat the largest sales in one week on vinyl since 1991. The sales record was previously held by Pearl Jam's, Vitalogy, which sold 34,000 copies in one week in 1994. In 2014, the sale of vinyl records was the only physical music medium with increasing sales with relation to the previous year. Sales of other mediums including individual digital tracks, digital albums and compact discs have fallen, the latter having the greatest drop-in-sales rate.

A:
Lazaretto