This task involves annotating the answer type to a given question that involve some kind of complex reasoning (including numerical reasoning). Note that the questions require looking at more than one part of the passage to answer. There are 3 possible answer types (i) spans, (ii) numbers and (iii) dates. If the answer can be found in the passage, label it as "span". If the answer is a number, label as "number". Similarly, label "date" if you think the answer to the given question is a date.

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 Kroller-Muller 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 Stadtische 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.
Question: In what year was the site-specific art at Santa Maria Annunciata in Chiesa Rossa, Milan, Italy completed?
date