Task: Question Generation
Input (English): Passage: From 1975, Flavin installed permanent works in Europe and the United States, including "Untitled. In memory of Urs Graf" at the Kunstmuseum Basel (conceived 1972, realized 1975); the Kröller-Müller Museum, Otterlo, Netherlands (1977); Hudson River Museum, Yonkers, New York (1979); United States Courthouse, Anchorage, Alaska (1979-89); the Staatliche Kunsthalle Baden-Baden, Germany (1989); the lobby of the MetroTech Center (with Skidmore, Owings & Merrill), Brooklyn, New York (1992); seven lampposts outside the Städtische Galerie im Lenbachhaus, Munich (1994); Hypovereinsbank, Munich (1995); Institut Arbeit und Technik/Wissenschaftspark, Gelsenkirchen, Germany (1996); and the Union Bank of Switzerland, Bern (1996).  Additional sites for Flavins architectural “interventions” became the Grand Central Station in New York (1976), Hamburger Bahnhof in Berlin (1996), and the Chinati Foundation in Marfa, Texas (2000). His large-scale work in colored fluorescent light for six buildings at the Chinati Foundation was initiated in the early 1980s, although the final plans were not completed until 1996. His last artwork was a site-specific art at Santa Maria Annunciata in Chiesa Rossa, Milan, Italy. The 1930s church was designed by Giovanni Muzio. The design for the piece was completed two days before Flavins death on November 29, 1996. Its installation was completed one year later with the assistance of the Dia Art Foundation and Fondazione Prada.
Output (English): Over how many years of time did Flavin install permanent works in Europe and the United States before his death?