Please answer this: Extract the answer to the question from the following context. Question: What occurred in the 74th 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.
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Answer: the leap to storing digital audio on an optical disc was easily made


Please answer this: Extract the answer to the question from the following context. Question: Who was a behind the scenes force in ending apartheid? Context: Intense media interest in the opinions and private lives of the royal family during the 1980s led to a series of sensational stories in the press, not all of which were entirely true. As Kelvin MacKenzie, editor of The Sun, told his staff: "Give me a Sunday for Monday splash on the Royals. Don't worry if it's not true—so long as there's not too much of a fuss about it afterwards." Newspaper editor Donald Trelford wrote in The Observer of 21 September 1986: "The royal soap opera has now reached such a pitch of public interest that the boundary between fact and fiction has been lost sight of ... it is not just that some papers don't check their facts or accept denials: they don't care if the stories are true or not." It was reported, most notably in The Sunday Times of 20 July 1986, that the Queen was worried that Margaret Thatcher's economic policies fostered social divisions and was alarmed by high unemployment, a series of riots, the violence of a miners' strike, and Thatcher's refusal to apply sanctions against the apartheid regime in South Africa. The sources of the rumours included royal aide Michael Shea and Commonwealth Secretary-General Shridath Ramphal, but Shea claimed his remarks were taken out of context and embellished by speculation. Thatcher reputedly said the Queen would vote for the Social Democratic Party—Thatcher's political opponents. Thatcher's biographer John Campbell claimed "the report was a piece of journalistic mischief-making". Belying reports of acrimony between them, Thatcher later conveyed her personal admiration for the Queen, and the Queen gave two honours in her personal gift—membership in the Order of Merit and the Order of the Garter—to Thatcher after her replacement as prime minister by John Major. Former Canadian Prime Minister Brian Mulroney said Elizabeth was a "behind the scenes force" in ending apartheid.
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Answer: Elizabeth


Please answer this: Extract the answer to the question from the following context. Question: Which of the following is not an organization: ITU or Galileo? Context: Frequencies for COMPASS are allocated in four bands: E1, E2, E5B, and E6 and overlap with Galileo. The fact of overlapping could be convenient from the point of view of the receiver design, but on the other hand raises the issues of inter-system interference, especially within E1 and E2 bands, which are allocated for Galileo's publicly regulated service. However, under International Telecommunication Union (ITU) policies, the first nation to start broadcasting in a specific frequency will have priority to that frequency, and any subsequent users will be required to obtain permission prior to using that frequency, and otherwise ensure that their broadcasts do not interfere with the original nation's broadcasts. It now appears that Chinese COMPASS satellites will start transmitting in the E1, E2, E5B, and E6 bands before Europe's Galileo satellites and thus have primary rights to these frequency ranges.
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Answer:
Galileo