Question: Unwilling to accept and license Columbia's system, in February 1949 RCA Victor, in cooperation of its parent, the Radio Corporation of America, released the first 45 rpm single, 7 inches in diameter with a large center hole. The 45 rpm player included a changing mechanism that allowed multiple disks to be stacked, much as a conventional changer handled 78s. The short playing time of a single 45 rpm side meant that long works, such as symphonies, had to be released on multiple 45s instead of a single LP, but RCA claimed that the new high-speed changer rendered side breaks so brief as to be inaudible or inconsequential. Early 45 rpm records were made from either vinyl or polystyrene. They had a playing time of eight minutes.
Try to answer this question if possible: What was the size of a RCA Victor 45 rpm?
Answer: 7 inches
Question: The National Archives Building in downtown Washington holds record collections such as all existing federal census records, ships' passenger lists, military unit records from the American Revolution to the PhilippineAmerican War, records of the Confederate government, the Freedmen's Bureau records, and pension and land records.
Try to answer this question if possible: Where is the Freedmen's Bureau located?
Answer: unanswerable
Question: Between 1945 and 1989, the share of ethnic Estonians in the population resident within the currently defined boundaries of Estonia dropped to 61%, caused primarily by the Soviet programme promoting mass immigration of urban industrial workers from Russia, Ukraine, and Belarus, as well as by wartime emigration and Joseph Stalin's mass deportations and executions.[citation needed] By 1989, minorities constituted more than one-third of the population, as the number of non-Estonians had grown almost fivefold.
Try to answer this question if possible: Who ordered large scales of deportations and executions?
Answer: Joseph Stalin
Question: Filming temporarily returned to England to shoot scenes at Blenheim Palace in Oxfordshire, which stood in for a location in Rome, before moving on to the city itself for a five-week shoot across the city, with locations including the Ponte Sisto bridge and the Roman Forum. The production faced opposition from a variety of special interest groups and city authorities, who were concerned about the potential for damage to historical sites around the city, and problems with graffiti and rubbish appearing in the film. A car chase scene set along the banks of the Tiber River and through the streets of Rome featured an Aston Martin DB10 and a Jaguar C-X75. The C-X75 was originally developed as a hybrid electric vehicle with four independent electric engines powered by two jet turbines, before the project was cancelled. The version used for filming was converted to use a conventional internal combustion engine, to minimise the potential for disruption from mechanical problems with the complex hybrid system. The C-X75s used for filming were developed by the engineering division of Formula One racing team Williams, who built the original C-X75 prototype for Jaguar.
Try to answer this question if possible: Which Formula One racing team developed the C-X75's used for filming.
Answer:
Williams