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Answer: Context: PSRB1919+21 is a pulsar with a period of 1.3373 seconds and a pulse width of 0.04 seconds. Discovered by Jocelyn Bell Burnell and Antony Hewish on November 28, 1967, it is the first discovered radio pulsar. The power and regularity of the signals were briefly thought to resemble an extraterrestrial beacon, leading the source to be nicknamed LGM-1 (for "little green men").

Hypothesis: The radio pulsar LGM-1 has a period of 1.3373 seconds and a pulse width of 0.04 seconds.

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Answer: Context: The 2017 Barcelona Open Banco Sabadell (also known as the "Torneo Godo") was a men's tennis tournament played on outdoor clay courts. It was the 65th edition of the event and part of the ATP World Tour 500 series of the 2017 ATP World Tour. It took place at the Real Club de Tenis Barcelona in Barcelona, Catalonia, Spain, from April 24 through April 30, 2017.

Hypothesis: It was very hot at the 2017 Barcelona Open Banco Sabadell.

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Answer: Context: Gunsmoke Western was an American comic book series published initially by Atlas Comics, the 1950s forerunner of Marvel Comics, and then into the 1960s by Marvel. A Western anthology that ran 46 issues, it featured early stories of the Marvel Old West heroes Kid Colt and the Two-Gun Kid, and work by such artists as Jack Kirby, John Severin, Joe Maneely, Doug Wildey, and many others.

Hypothesis: The television show Gunsmoke was based off of the comic book series Gunsmoke Western.

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Answer:
Context: The Last Horse Carriage in Berlin (German:Die letzte Droschke von Berlin) is a 1926 German silent comedy drama film directed by Carl Boese and starring Lupu Pick, Hedwig Wangel and Maly Delschaft. The film's art direction was by Franz Schroedter. The film premiered in Berlin on 18 March 1926.

Hypothesis: The Last Horse Carriage in Berlin was horror film.