Generate a context and a hypothesis.

Answer: Context: Pavel Sergeyevich Alexandrov (Russian: ), sometimes romanized Paul Alexandroff or Aleksandrov (7 May 1896 16 November 1982), was a Soviet mathematician. He wrote about three hundred papers, making important contributions to set theory and topology.

Hypothesis: Pavel wrote most of his papers during World War 1.

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Answer: Context: Jara, also known as Jera, is a Nigerian language reported to be spoken by 46,000 people in 2000. It is spoken in Borno and Gombe States, in the Biu, Kwaya-Kusar, Akko, and Yamaltu-Deba LGAs. It is an Afro-Asiatic language, in the BiuMandara branch of Chadic family. Use of Jara is declining; it is being displaced by Fulfulde and Hausa.

Hypothesis: Less than 40000 people spoke Jara in the year 2000

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Answer: Context: Mark Arm (born Mark Thomas McLaughlin, February 21, 1962) is the vocalist for the grunge band Mudhoney. His former group, Green River, is one of the first grunge bands, along with Malfunkshun, Soundgarden, Skin Yard, the U-Men, and others. He is also the manager of the Sub Pop warehouse and previously worked at Fantagraphics Books.

Hypothesis: Green River was the first grunge band.

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Answer:
Context: Ogallala is a city in Keith County, Nebraska, United States. The population was 4,737 at the 2010 census. It is the county seat of Keith County. In the days of the Nebraska Territory, the city was a stop on the Pony Express and later along the transcontinental railroad. The Ogallala Aquifer was named after the city.

Hypothesis: Ogallala is the name of a city located in many states.