Question: when was The 52nd annual Berlin International Film Festival held?

Context articles: Norbert Kückelmann
Bloody Sunday (film)
2nd Berlin International Film Festival
32nd Berlin International Film Festival
22nd Berlin International Film Festival
Roland Gräf
42nd Berlin International Film Festival
62nd Berlin International Film Festival
Manuel Gutiérrez Aragón
52nd Berlin International Film Festival

Norbert Kückelmann, (born 1 May 1930 - died 31 August 2017) was a German film director, screenwriter and lawyer.
 He was born in Munich, During the 1950s he studied law and worked part-time as a film critic.
 After graduation, he worked as a lawyer in Munich and Mainz.
 In 1965 he founded together with Alexander Kluge and Hans-Rolf Strobel the Young German Film Committee (German: "Kuratorium Junger Deutscher Film" .
 Continuing to work as a lawyer he directed his first film "Die Sachverständigen" in 1973.
 At the 23rd Berlin International Film Festival the film won a Silver Bear.
 His first film also won the Deutscher Filmpreis - Best Feature Film.
 At the 34th Berlin International Film Festival, his film "Man Under Suspicion" also won a Silver Bear.
 Two years later, he was a member of the jury at the 36th Berlin International Film Festival.
Bloody Sunday is a 2002 film about the 1972 "Bloody Sunday" shootings in Derry, Northern Ireland.
 Although produced by Granada Television as a TV film, it premiered at the Sundance Film Festival on 16 January, a few days before its screening on ITV on 20 January, and then in selected London cinemas from 25 January.
 The production was written and directed by Paul Greengrass.
 Though set in Derry, the film was actually shot in Ballymun in North Dublin.
 However, some location scenes were shot in Derry, in Guildhall Square and in Creggan on the actual route of the march in 1972.
The 2nd annual Berlin International Film Festival was held from 12 June to 25 June 1952.
 The FIAPF prohibited the festival from awarding any official prizes by a jury (which only Cannes and Venice were qualified to do so), instead awards were given by audience voting.
 This was changed in 1956 when the FIAPF granted Berlin "A-Status" during that year.
The 32nd annual Berlin International Film Festival was held from 12–23 February 1982.
 The Golden Bear was awarded to the West German film "Veronika Voss" directed by Rainer Werner Fassbinder.
The 22nd annual Berlin International Film Festival was held from 23 June to 4 July 1972.
 The Golden Bear was awarded to the Italian film "I racconti di Canterbury" directed by Pier Paolo Pasolini.
Roland Gräf (13 October 1934 – 11 May 2017) was a German cinematographer, film director and screenwriter.
 In 1982 his film "Märkische Forschungen" won the Findling Award at the National Feature Film Festival of the GDR in Karl-Marx-Stadt (Nationales Spielfilmfestival der DDR).
 His 1986 film "The House on the River" was entered into the 36th Berlin International Film Festival.
 Three years later, his film "" was entered into the 39th Berlin International Film Festival.
 In 1991, his film "The Tango Player" was entered into the 41st Berlin International Film Festival.
The 42nd annual Berlin International Film Festival was held from February 13 to 24, 1992.
 The festival opened with "The Inner Circle" by Andrei Konchalovsky.
 The Golden Bear was awarded to American film "Grand Canyon" directed by Lawrence Kasdan.
 The retrospective dedicated to Babelsberg Studios films was shown at the festival.
The 62nd annual Berlin International Film Festival was held from 9 to 19 February 2012.
 British film director Mike Leigh was the President of the Jury.
 The first five films to be screened in the competition were announced on 19 December 2011.
 American actress Meryl Streep was presented with the Honorary Golden Bear on 14 February.
 Benoît Jacquot's film "Les adieux à la reine" was announced as the opening film.
 The Golden Bear for Best Film went to the Italian film "Caesar Must Die", directed by Paolo and Vittorio Taviani, which also served as closing night film.
Manuel Gutiérrez Aragón (Torrelavega, Cantabria 2 January 1940) is a Spanish screenwriter and film director.
 His 1973 film "Habla, mudita" was entered into the 23rd Berlin International Film Festival.
 In 1977, he won the Silver Bear for Best Director for "Camada negra" at the 27th Berlin International Film Festival.
 His 1979 film "El corazón del bosque" was entered into the 29th Berlin International Film Festival.
 Two years later, his film "Maravillas" was entered into the 31st Berlin International Film Festival.
 His 1982 film "Demons in the Garden" was entered into the 13th Moscow International Film Festival where it won the FIPRESCI Prize.
 In 1991 he was a member of the jury at the 17th Moscow International Film Festival.
The 52nd annual Berlin International Film Festival was held from February 6 to 17, 2002.
 The festival opened with "Heaven" by Tom Tykwer.
 New print of Charlie Chaplin's 1940 American satirical dramedy film "The Great Dictator" was the closing film of the festival.
 The Golden Bear was awarded to British–Irish film "Bloody Sunday" directed by Paul Greengrass and Japanese Animated film "Spirited Away" directed by Hayao Miyazaki.