Input: LaserDisc
PAL LaserDiscs have a slightly longer playing time than NTSC discs, but have fewer audio options. PAL discs only have two audio tracks, consisting of either two analog-only tracks on older PAL LDs, or two digital-only tracks on newer discs. In comparison, later NTSC LDs are capable of carrying four tracks (two analog and two digital). On certain releases, one of the analog tracks is used to carry a modulated AC-3 signal for 5.1 channel audio (for decoding and playback by newer LD players with an "AC-3 RF" output). However, older NTSC LDs made before 1984 (such as the original DiscoVision discs) only have two analog audio tracks.

Which has a longer playing time: PAL LaserDiscs or NTSC discs?
Output: PAL LaserDiscs

Input: Poultry
Commercial turkeys are usually reared indoors under controlled conditions. These are often large buildings, purpose-built to provide ventilation and low light intensities (this reduces the birds' activity and thereby increases the rate of weight gain). The lights can be switched on for 24-hrs/day, or a range of step-wise light regimens to encourage the birds to feed often and therefore grow rapidly. Females achieve slaughter weight at about 15 weeks of age and males at about 19. Mature commercial birds may be twice as heavy as their wild counterparts. Many different breeds have been developed, but the majority of commercial birds are white, as this improves the appearance of the dressed carcass, the pin feathers being less visible. Turkeys were at one time mainly consumed on special occasions such as Christmas (10 million birds in the United Kingdom) or Thanksgiving (60 million birds in the United States). However, they are increasingly becoming part of the everyday diet in many parts of the world.

What type of conditions are used to increase the weight and profitability of commercial turkeys?
Output: The lights can be switched on for 24-hrs/day, or a range of step-wise light regimens to encourage the birds to feed often and therefore grow rapidly

Input: Hydrogen
In 1671, Robert Boyle discovered and described the reaction between iron filings and dilute acids, which results in the production of hydrogen gas. In 1766, Henry Cavendish was the first to recognize hydrogen gas as a discrete substance, by naming the gas from a metal-acid reaction "flammable air". He speculated that "flammable air" was in fact identical to the hypothetical substance called "phlogiston" and further finding in 1781 that the gas produces water when burned. He is usually given credit for its discovery as an element. In 1783, Antoine Lavoisier gave the element the name hydrogen (from the Greek - hydro meaning "water" and - genes meaning "creator") when he and Laplace reproduced Cavendish's finding that water is produced when hydrogen is burned.

What year was the discovery of hydrogen gas?
Output: 1671

Input: Iran
The blossoming literature, philosophy, medicine, and art of Iran became major elements in the formation of a new age for the Iranian civilization, during the period known as the Islamic Golden Age. The Islamic Golden Age reached its peak by the 10th and 11th centuries, during which Iran was the main theater of the scientific activities. After the 10th century, Persian language, alongside Arabic, was used for the scientific, philosophical, historical, musical, and medical works, whereas the important Iranian writers, such as Tusi, Avicenna, Qotb od Din Shirazi, and Biruni, had major contributions in the scientific writing.

What period was known for an era where Iranian civilization blossomed and peaked?
Output:
the Islamic Golden Age