Problem: High-definition television:

In addition, recording and reproducing an HDTV signal was a significant technical challenge in the early years of HDTV (Sony HDVS). Japan remained the only country with successful public broadcasting of analog HDTV, with seven broadcasters sharing a single channel.

How many broadcasters did Japan have sharing a multi channel?
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A: unanswerable

Problem: Following Anwar Sadat's ascension to the Egyptian presidency, Libya's relations with Egypt deteriorated. Sadat was perturbed by Gaddafi's unpredictability and insistence that Egypt required a cultural revolution. In February 1973, Israeli forces shot down Libyan Arab Airlines Flight 114, which had strayed from Egyptian airspace into Israeli-held territory during a sandstorm. Gaddafi was infuriated that Egypt had not done more to prevent the incident, and in retaliation planned to destroy the RMS Queen Elizabeth 2, a British ship chartered by American Jews to sail to Haifa for Israel's 25th anniversary. Gaddafi ordered an Egyptian submarine to target the ship, but Sadat cancelled the order, fearing a military escalation.
Why did Libyan Arab Airlines Flight 114 accidentally fly into Israel's airspace?
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Answer: sandstorm

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Most bacteria have a single circular chromosome that can range in size from only 160,000 base pairs in the endosymbiotic bacteria Candidatus Carsonella ruddii, to 12,200,000 base pairs in the soil-dwelling bacteria Sorangium cellulosum. Spirochaetes of the genus Borrelia are a notable exception to this arrangement, with bacteria such as Borrelia burgdorferi, the cause of Lyme disease, containing a single linear chromosome. The genes in bacterial genomes are usually a single continuous stretch of DNA and although several different types of introns do exist in bacteria, these are much rarer than in eukaryotes.
What bacteria is responsible for Lyme disease?
A: Borrelia burgdorferi

Context and question: Many Baptist churches choose to affiliate with organizational groups that provide fellowship without control. The largest such group is the Southern Baptist Convention. There also are a substantial number of smaller cooperative groups. Finally, there are Baptist churches that choose to remain autonomous and independent of any denomination, organization, or association. It has been suggested that a primary Baptist principle is that local Baptist Churches are independent and self-governing, and if so the term 'Baptist denomination' may be considered somewhat incongruous.
What churches never become autonomous?
Answer: unanswerable

Question: The province is home to several historical sites, including the Shalimar Gardens, the Lahore Fort, the Badshahi Mosque, the Rohtas Fort and the ruins of the ancient city of Harrapa. The Anarkali Market and Jahangir's Tomb are prominent in the city of Lahore as is the Lahore Museum, while the ancient city of Taxila in the northwest was once a major centre of Buddhist and Hindu influence. Several important Sikh shrines are in the province, including the birthplace of the first Guru, Guru Nanak. (born at Nankana Sahib). There are a few famous hill stations, including Murree, Bhurban, Patriata and Fort Munro.
Is there an answer to this question: What famous tomb is in Lahore?

Answer: Jahangir's Tomb

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
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.
A special memory cell of a CPU is called what?
A:
a register