context: Kurt Legovec, also Legovek [1] (English: Kurt Lehovec, born July 12, 1918 in, Austria-Hungary, died February 17, 2012 in Los Angeles) - Czech, subsequently American, physicist and inventor, semiconductor researcher. In early 1959, Legovec invented and patented technology - one of the three fundamental technologies that made it possible to create monolithic integrated circuits. Legovec is the author of the model of space charge in the surface layers of ionic crystals (Legovek effect [sic], 1953), co-author of the first theoretical model of a light-emitting diode based on silicon carbide (1951), an equivalent MIS transistor circuit (Legovek-Slobodsky model, 1961-1964), physical model of an MOS transistor (Legovek-Zulig model, 1968-1970). All these works of Legovets were created in the USA, where he was taken out in 1947 during the operation "Paperclip".
question: During which operation was Kurt Legovez taken to the United States?
answers.text: "Paperclip"