Input: Article: 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.

Now answer this question: What did Nakajima's team use to create a digital PCM adaptor audio tape recorder?

Output: a Betamax video recorder

Input: Article: The 2006 renewal and re-equipment effort has resulted in the acquisition of specific equipment (main battle tanks, artillery, unmanned air vehicles and other systems) to support the mission in Afghanistan. It has also encompassed initiatives to renew certain so-called "core capabilities" (such as the air force's medium range transport aircraft fleet – the C-130 Hercules – and the army's truck and armoured vehicle fleets). In addition, new systems (such as C-17 Globemaster III strategic transport aircraft and CH-47 Chinook heavy-lift helicopters) have also been acquired for the Armed Forces. Although the viability of the Canada First Defence Strategy continues to suffer setbacks from challenging and evolving fiscal and other factors, it originally aimed to:

Now answer this question: What equipment was acquired to aid in Afghanistan?

Output: main battle tanks, artillery, unmanned air vehicles

Input: Article: In the past, the floor exercise event was executed on the bare floor or mats such as wrestling mats. Today, the floor event occurs on a carpeted 12m × 12m square, usually consisting of hard foam over a layer of plywood, which is supported by springs or foam blocks generally called a "spring" floor. This provides a firm surface that provides extra bounce or spring when compressed, allowing gymnasts to achieve greater height and a softer landing after the composed skill. Gymnasts perform a choreographed routine up to 90 seconds in the floor exercise event; Depending on the level, they may choose their own, or, if known as a "compulsory gymnast," default music must be played. In some gymnastic associations such as United States Association of Gymnastic Clubs (USAIGC), gymnasts are allowed to have vocals in their music but at USA Gymnastics competitions a large deduction is taken from the score for having vocals in the music. The routine should consist of tumbling lines, series of jumps, leaps, dance elements, acrobatic skills, and turns, or piviots, on one foot. A gymnast can perform up to four tumbling lines that usually includes at least one flight element without hand support. Each level of gymnastics requires the athlete to perform a different number of tumbling passes. In level 7 in the United States, a gymnast is required to do 2–3, and in levels 8–10, at least 3–4 tumbling passes are required.

Now answer this question: Why helps add an extra bounce to the floor?

Output:
springs or foam blocks generally called a "spring" floor