[Q]: Question: "what is been discussed?" Context: "A key component common to all CPUs is the program counter, a special memory cell (a register) that keeps track of which location in memory the next instruction is to be read from." Answer:
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[A]: CPUs

[Q]: Question: "If you are a Buddhist, what do you need to study?" Context: "Buddhist scriptures and other texts exist in great variety. Different schools of Buddhism place varying levels of value on learning the various texts. Some schools venerate certain texts as religious objects in themselves, while others take a more scholastic approach. Buddhist scriptures are mainly written in Pali, Tibetan, Mongolian, and Chinese. Some texts still exist in Sanskrit and Buddhist Hybrid Sanskrit." Answer:
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[A]: texts

[Q]: Question: "Some churches, but what type of day was a notable one that delay festivals?" Context: "The Gregorian calendar is a solar calendar. A regular Gregorian year consists of 365 days, but as in the Julian calendar, in a leap year, a leap day is added to February. In the Julian calendar a leap year occurs every 4 years, but the Gregorian calendar omits 3 leap days every 400 years. In the Julian calendar, this leap day was inserted by doubling 24 February, and the Gregorian reform did not change the date of the leap day. In the modern period, it has become customary to number the days from the beginning of the month, and February 29th is often considered as the leap day. Some churches, notably the Roman Catholic Church, delay February festivals after the 23rd by one day in leap years." Answer:
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[A]: after the 23rd

[Q]: Question: "In what time period did more than 20% of travelers use public transport?" Context: "Melbourne has an integrated public transport system based around extensive train, tram, bus and taxi systems. Flinders Street Station was the world's busiest passenger station in 1927 and Melbourne's tram network overtook Sydney's to become the world's largest in the 1940s, at which time 25% of travellers used public transport but by 2003 it had declined to just 7.6%. The public transport system was privatised in 1999, symbolising the peak of the decline. Despite privatisation and successive governments persisting with auto-centric urban development into the 21st century, there have since been large increases in public transport patronage, with the mode share for commuters increasing to 14.8% and 8.4% of all trips. A target of 20% public transport mode share for Melbourne by 2020 was set by the state government in 2006. Since 2006 public transport patronage has grown by over 20%." Answer:
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[A]:
the 1940s