Problem: In the 21st century the most famous department store in Russia is GUM in Moscow, followed by TsUM and the Petrovsky Passage. Other popular stores are Mega (shopping malls), Stockmann, and Marks & Spencer. Media Markt, M-video, Technosila, and White Wind (Beliy Veter) sell large number of electronic devices. In St. Petersburg The Passage has been popular since the 1840s. 1956 Soviet film Behind Store Window (За витриной универмага) on YouTube depicts operation of a Moscow department store in 1950's.
When wasn't the movie depicting soviet department stores filmed? 
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Answer: unanswerable


Problem: As in Brazil, the mandolin has played an important role in the Music of Venezuela. It has enjoyed a privileged position as the main melodic instrument in several different regions of the country. Specifically, the eastern states of Sucre, Nueva Esparta, Anzoategui and Monagas have made the mandolin the main instrument in their versions of Joropo as well as Puntos, Jotas, Polos, Fulias, Merengues and Malagueñas. Also, in the west of the country the sound of the mandolin is intrinsically associated with the regional genres of the Venezuelan Andes: Bambucos, Pasillos, Pasodobles, and Waltzes. In the western city of Maracaibo the Mandolin has been played in Decimas, Danzas and Contradanzas Zulianas; in the capital, Caracas, the Merengue Rucaneao, Pasodobles and Waltzes have also been played with mandolin for almost a century. Today, Venezuelan mandolists include an important group of virtuoso players and ensembles such as Alberto Valderrama, Jesus Rengel, Ricardo Sandoval, Saul Vera, and Cristobal Soto.
 What place in Brazil do mandolins play an unimportant role?
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Answer: unanswerable


Problem: Following Garreth Mallory's promotion to M, on a mission in Mexico City unofficially ordered by a posthumous message from the previous M, 007 James Bond kills three men plotting a terrorist bombing during the Day of the Dead and gives chase to Marco Sciarra, an assassin who survived the attack. In the ensuing struggle, Bond steals his ring, which is emblazoned with a stylised octopus, and then kills Sciarra by kicking him out of a helicopter. Upon returning to London, Bond is indefinitely suspended from field duty by M, who is in the midst of a power struggle with C, the head of the privately-backed Joint Intelligence Service, consisting of the recently merged MI5 and MI6. C campaigns for Britain to form alongside 8 other countries "Nine Eyes ", a global surveillance and intelligence co-operation initiative between nine member states, and uses his influence to close down the '00' section, believing it to be outdated.
Who is M's rival?
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Answer:
C