Problem: BeiDou Navigation Satellite System:

The first BeiDou system, officially called the BeiDou Satellite Navigation Experimental System (simplified Chinese: 北斗卫星导航试验系统; traditional Chinese: 北斗衛星導航試驗系統; pinyin: Běidǒu wèixīng dǎoháng shìyàn xìtǒng) and also known as BeiDou-1, consists of three satellites and offers limited coverage and applications. It has been offering navigation services, mainly for customers in China and neighboring regions, since 2000.

What system is also known as BeiDou-2?
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A: unanswerable


Problem: Publius Vergilius Maro (Classical Latin: [ˈpuː.blɪ.ʊs wɛrˈɡɪ.lɪ.ʊs ˈma.roː]; October 15, 70 BC – September 21, 19 BC), usually called Virgil or Vergil /ˈvɜːrdʒᵻl/ in English, was an ancient Roman poet of the Augustan period. He is known for three major works of Latin literature, the Eclogues (or Bucolics), the Georgics, and the epic Aeneid. A number of minor poems, collected in the Appendix Vergiliana, are sometimes attributed to him.
When did Virgil publish his last poem?
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Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The International Criminal Tribunal for Rwanda (ICTR) is a court under the auspices of the United Nations for the prosecution of offenses committed in Rwanda during the genocide which occurred there during April 1994, commencing on 6 April. The ICTR was created on 8 November 1994 by the Security Council of the United Nations in order to judge those people responsible for the acts of genocide and other serious violations of the international law performed in the territory of Rwanda, or by Rwandan citizens in nearby states, between 1 January and 31 December 1994.
Which branch of the UN created Rwanda in November 1995?
A: unanswerable


Context and question: The Supermarine Spitfire was designed and developed in Southampton, evolving from the Schneider trophy-winning seaplanes of the 1920s and 1930s. Its designer, R J Mitchell, lived in the Portswood area of Southampton, and his house is today marked with a blue plaque. Heavy bombing of the factory in September 1940 destroyed it as well as homes in the vicinity, killing civilians and workers. World War II hit Southampton particularly hard because of its strategic importance as a major commercial port and industrial area. Prior to the Invasion of Europe, components for a Mulberry harbour were built here. After D-Day, Southampton docks handled military cargo to help keep the Allied forces supplied, making it a key target of Luftwaffe bombing raids until late 1944. Southampton docks was featured in the television show 24: Live Another Day in Day 9: 9:00 p.m. – 10:00 p.m.
What area of Southampton did Mitchell hail from?
Answer: Portswood


Question: Philadelphia has dedicated landmarks to its sister cities. Dedicated in June 1976, the Sister Cities Plaza, a site of 0.5 acres (2,000 m2) located at 18th and Benjamin Franklin Parkway, honors Philadelphia's relationships with Tel Aviv and Florence which were its first sister cities. Another landmark, the Toruń Triangle, honoring the sister city relationship with Toruń, Poland, was constructed in 1976, west of the United Way building at 18th Street and the Benjamin Franklin Parkway. In addition, the Triangle contains the Copernicus monument. Renovations were made to Sister Cities Park in mid-2011 and on May 10, 2012, SCP was reopened and currently features an interactive fountain honoring Philadelphia's ten sister and friendship cities, a café and visitor's center, children's play area, outdoor garden, and boat pond, as well as pavilion built to environmentally friendly standards.
Is there an answer to this question: How many sister cities does Philadelphia have?

Answer: ten


Question: Antarctica (US English i/æntˈɑːrktɪkə/, UK English /ænˈtɑːktɪkə/ or /ænˈtɑːtɪkə/ or /ænˈɑːtɪkə/)[Note 1] is Earth's southernmost continent, containing the geographic South Pole. It is situated in the Antarctic region of the Southern Hemisphere, almost entirely south of the Antarctic Circle, and is surrounded by the Southern Ocean. At 14,000,000 square kilometres (5,400,000 square miles), it is the fifth-largest continent in area after Asia, Africa, North America, and South America. For comparison, Antarctica is nearly twice the size of Australia. About 98% of Antarctica is covered by ice that averages 1.9 km (1.2 mi; 6,200 ft) in thickness, which extends to all but the northernmost reaches of the Antarctic Peninsula.
Is there an answer to this question: What Ocean does Antarctica surround?

Answer:
unanswerable